FHIR Cross-Version Extensions package for FHIR R4 from FHIR R3
0.0.1-snapshot-2 - informative
FHIR Cross-Version Extensions package for FHIR R4 from FHIR R3
0.0.1-snapshot-2 - informative
FHIR Cross-Version Extensions package for FHIR R4 from FHIR R3 - Version 0.0.1-snapshot-2. See the Directory of published versions
| Page standards status: Informative | Maturity Level: 0 |
@prefix fhir: <http://hl7.org/fhir/> . @prefix owl: <http://www.w3.org/2002/07/owl#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix xsd: <http://www.w3.org/2001/XMLSchema#> . # - resource ------------------------------------------------------------------- a fhir:ValueSet ; fhir:nodeRole fhir:treeRoot ; fhir:id [ fhir:v "R3-observation-statistics-for-R4"] ; # fhir:text [ fhir:status [ fhir:v "generated" ] ; fhir:div "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: ValueSet R3-observation-statistics-for-R4</b></p><a name=\"R3-observation-statistics-for-R4\"> </a><a name=\"hcR3-observation-statistics-for-R4\"> </a><p>This value set expansion contains 21 concepts.</p><table class=\"codes\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>System</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-average\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-average\">average</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Average</td><td><div><p>The <a href=\"https://en.wikipedia.org/wiki/Arithmetic_mean\">mean</a> of N measurements over the stated period</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-maximum\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-maximum\">maximum</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Maximum</td><td><div><p>The <a href=\"https://en.wikipedia.org/wiki/Maximal_element\">maximum</a> value of N measurements over the stated period</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-minimum\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-minimum\">minimum</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Minimum</td><td><div><p>The <a href=\"https://en.wikipedia.org/wiki/Minimal_element\">minimum</a> value of N measurements over the stated period</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-count\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-count\">count</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Count</td><td><div><p>The [number] of valid measurements over the stated period that contributed to the other statistical outputs</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-totalcount\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-totalcount\">totalcount</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Total Count</td><td><div><p>The total [number] of valid measurements over the stated period, including observations that were ignored because they did not contain valid result values</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-median\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-median\">median</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Median</td><td><div><p>The <a href=\"https://en.wikipedia.org/wiki/Median\">median</a> of N measurements over the stated period</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-std-dev\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-std-dev\">std-dev</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Standard Deviation</td><td><div><p>The <a href=\"https://en.wikipedia.org/wiki/Standard_deviation\">standard deviation</a> of N measurements over the stated period</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-sum\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-sum\">sum</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Sum</td><td><div><p>The <a href=\"https://en.wikipedia.org/wiki/Summation\">sum</a> of N measurements over the stated period</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-variance\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-variance\">variance</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Variance</td><td><div><p>The <a href=\"https://en.wikipedia.org/wiki/Variance\">variance</a> of N measurements over the stated period</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-20-percent\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-20-percent\">20-percent</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>20th Percentile</td><td><div><p>The 20th <a href=\"https://en.wikipedia.org/wiki/Percentile\">Percentile</a> of N measurements over the stated period</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-80-percent\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-80-percent\">80-percent</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>80th Percentile</td><td><div><p>The 80th <a href=\"https://en.wikipedia.org/wiki/Percentile\">Percentile</a> of N measurements over the stated period</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-4-lower\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-4-lower\">4-lower</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Lower Quartile</td><td><div><p>The lower <a href=\"https://en.wikipedia.org/wiki/Quartile\">Quartile</a> Boundary of N measurements over the stated period</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-4-upper\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-4-upper\">4-upper</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Upper Quartile</td><td><div><p>The upper <a href=\"https://en.wikipedia.org/wiki/Quartile\">Quartile</a> Boundary of N measurements over the stated period</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-4-dev\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-4-dev\">4-dev</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Quartile Deviation</td><td><div><p>The difference between the upper and lower <a href=\"https://en.wikipedia.org/wiki/Quartile\">Quartiles</a> is called the Interquartile range. (IQR = Q3-Q1) Quartile deviation or Semi-interquartile range is one-half the difference between the first and the third quartiles.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-5-1\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-5-1\">5-1</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>1st Quintile</td><td><div><p>The lowest of four values that divide the N measurements into a frequency distribution of five classes with each containing one fifth of the total population</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-5-2\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-5-2\">5-2</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>2nd Quintile</td><td><div><p>The second of four values that divide the N measurements into a frequency distribution of five classes with each containing one fifth of the total population</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-5-3\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-5-3\">5-3</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>3rd Quintile</td><td><div><p>The third of four values that divide the N measurements into a frequency distribution of five classes with each containing one fifth of the total population</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-5-4\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-5-4\">5-4</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>4th Quintile</td><td><div><p>The fourth of four values that divide the N measurements into a frequency distribution of five classes with each containing one fifth of the total population</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-skew\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-skew\">skew</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Skew</td><td><div><p>Skewness is a measure of the asymmetry of the probability distribution of a real-valued random variable about its mean. The skewness value can be positive or negative, or even undefined. Source: <a href=\"https://en.wikipedia.org/wiki/Skewness\">Wikipedia</a></p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-kurtosis\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-kurtosis\">kurtosis</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Kurtosis</td><td><div><p>Kurtosis is a measure of the \"tailedness\" of the probability distribution of a real-valued random variable. Source: <a href=\"https://en.wikipedia.org/wiki/Kurtosis\">Wikipedia</a></p>\n</div></td></tr><tr><td style=\"white-space:nowrap\"><a name=\"R3-observation-statistics-for-R4-http://hl7.org/fhir/observation-statistics-regression\"> </a> <a href=\"CodeSystem-observation-statistics.html#observation-statistics-regression\">regression</a></td><td>http://hl7.org/fhir/observation-statistics</td><td>Regression</td><td><div><p>Linear regression is an approach for modeling two-dimensional sample points with one independent variable and one dependent variable (conventionally, the x and y coordinates in a Cartesian coordinate system) and finds a linear function (a non-vertical straight line) that, as accurately as possible, predicts the dependent variable values as a function of the independent variables. Source: <a href=\"https://en.wikipedia.org/wiki/Simple_linear_regression\">Wikipedia</a> This Statistic code will return both a gradient and an intercept value.</p>\n</div></td></tr></table></div>"^^rdf:XMLLiteral ] ; # fhir:extension ( [ fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm"^^xsd:anyURI ] ; fhir:value [ a fhir:integer ; fhir:v 0 ] ] [ fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"^^xsd:anyURI ] ; fhir:value [ a fhir:code ; fhir:v "fhir" ] ] [ ( fhir:extension [ fhir:url [ fhir:v "packageId"^^xsd:anyURI ] ; fhir:value [ a fhir:id ; fhir:v "hl7.fhir.uv.xver-r3.r4" ] ] [ fhir:url [ fhir:v "version"^^xsd:anyURI ] ; fhir:value [ a fhir:string ; fhir:v "0.0.1-snapshot-2" ] ] ) ; fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/package-source"^^xsd:anyURI ] ] [ fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"^^xsd:anyURI ] ; fhir:value [ a fhir:code ; fhir:v "informative" ; ( fhir:extension [ fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom"^^xsd:anyURI ] ; fhir:value [ a fhir:canonical ; fhir:v "http://hl7.org/fhir/3.0/ImplementationGuide/hl7.fhir.uv.xver-r3.r4"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/3.0/ImplementationGuide/hl7.fhir.uv.xver-r3.r4> ] ] ) ] ] ) ; # fhir:url [ fhir:v "http://hl7.org/fhir/3.0/ValueSet/R3-observation-statistics-for-R4"^^xsd:anyURI] ; # fhir:version [ fhir:v "0.0.1-snapshot-2"] ; # fhir:name [ fhir:v "R3_observation_statistics_for_R4"] ; # fhir:title [ fhir:v "Cross-version VS for R3.StatisticsCode for use in FHIR R4"] ; # fhir:status [ fhir:v "active"] ; # fhir:experimental [ fhir:v false] ; # fhir:date [ fhir:v "2025-09-01T22:35:57.422149+10:00"^^xsd:dateTime] ; # fhir:publisher [ fhir:v "FHIR Infrastructure"] ; # fhir:contact ( [ fhir:name [ fhir:v "FHIR Infrastructure" ] ; ( fhir:telecom [ fhir:system [ fhir:v "url" ] ; fhir:value [ fhir:v "http://www.hl7.org/Special/committees/fiwg" ] ] ) ] ) ; # fhir:description [ fhir:v "This cross-version ValueSet represents concepts from http://hl7.org/fhir/ValueSet/observation-statistics|3.0.2 for use in FHIR R4. Concepts not present here have direct `equivalent` mappings crossing all versions from R3 to R4."] ; # fhir:jurisdiction ( [ ( fhir:coding [ fhir:system [ fhir:v "http://unstats.un.org/unsd/methods/m49/m49.htm"^^xsd:anyURI ] ; fhir:code [ fhir:v "001" ] ; fhir:display [ fhir:v "World" ] ] ) ] ) ; # fhir:compose [ ( fhir:include [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; ( fhir:concept [ fhir:code [ fhir:v "average" ] ; fhir:display [ fhir:v "Average" ] ] [ fhir:code [ fhir:v "maximum" ] ; fhir:display [ fhir:v "Maximum" ] ] [ fhir:code [ fhir:v "minimum" ] ; fhir:display [ fhir:v "Minimum" ] ] [ fhir:code [ fhir:v "count" ] ; fhir:display [ fhir:v "Count" ] ] [ fhir:code [ fhir:v "totalcount" ] ; fhir:display [ fhir:v "Total Count" ] ] [ fhir:code [ fhir:v "median" ] ; fhir:display [ fhir:v "Median" ] ] [ fhir:code [ fhir:v "std-dev" ] ; fhir:display [ fhir:v "Standard Deviation" ] ] [ fhir:code [ fhir:v "sum" ] ; fhir:display [ fhir:v "Sum" ] ] [ fhir:code [ fhir:v "variance" ] ; fhir:display [ fhir:v "Variance" ] ] [ fhir:code [ fhir:v "20-percent" ] ; fhir:display [ fhir:v "20th Percentile" ] ] [ fhir:code [ fhir:v "80-percent" ] ; fhir:display [ fhir:v "80th Percentile" ] ] [ fhir:code [ fhir:v "4-lower" ] ; fhir:display [ fhir:v "Lower Quartile" ] ] [ fhir:code [ fhir:v "4-upper" ] ; fhir:display [ fhir:v "Upper Quartile" ] ] [ fhir:code [ fhir:v "4-dev" ] ; fhir:display [ fhir:v "Quartile Deviation" ] ] [ fhir:code [ fhir:v "5-1" ] ; fhir:display [ fhir:v "1st Quintile" ] ] [ fhir:code [ fhir:v "5-2" ] ; fhir:display [ fhir:v "2nd Quintile" ] ] [ fhir:code [ fhir:v "5-3" ] ; fhir:display [ fhir:v "3rd Quintile" ] ] [ fhir:code [ fhir:v "5-4" ] ; fhir:display [ fhir:v "4th Quintile" ] ] [ fhir:code [ fhir:v "skew" ] ; fhir:display [ fhir:v "Skew" ] ] [ fhir:code [ fhir:v "kurtosis" ] ; fhir:display [ fhir:v "Kurtosis" ] ] [ fhir:code [ fhir:v "regression" ] ; fhir:display [ fhir:v "Regression" ] ] ) ] ) ] ; # fhir:expansion [ fhir:timestamp [ fhir:v "2025-09-01T22:35:57.42215+10:00"^^xsd:dateTime ] ; ( fhir:contains [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "average" ] ; fhir:display [ fhir:v "Average" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "maximum" ] ; fhir:display [ fhir:v "Maximum" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "minimum" ] ; fhir:display [ fhir:v "Minimum" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "count" ] ; fhir:display [ fhir:v "Count" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "totalcount" ] ; fhir:display [ fhir:v "Total Count" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "median" ] ; fhir:display [ fhir:v "Median" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "std-dev" ] ; fhir:display [ fhir:v "Standard Deviation" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "sum" ] ; fhir:display [ fhir:v "Sum" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "variance" ] ; fhir:display [ fhir:v "Variance" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "20-percent" ] ; fhir:display [ fhir:v "20th Percentile" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "80-percent" ] ; fhir:display [ fhir:v "80th Percentile" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "4-lower" ] ; fhir:display [ fhir:v "Lower Quartile" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "4-upper" ] ; fhir:display [ fhir:v "Upper Quartile" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "4-dev" ] ; fhir:display [ fhir:v "Quartile Deviation" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "5-1" ] ; fhir:display [ fhir:v "1st Quintile" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "5-2" ] ; fhir:display [ fhir:v "2nd Quintile" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "5-3" ] ; fhir:display [ fhir:v "3rd Quintile" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "5-4" ] ; fhir:display [ fhir:v "4th Quintile" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "skew" ] ; fhir:display [ fhir:v "Skew" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "kurtosis" ] ; fhir:display [ fhir:v "Kurtosis" ] ] [ fhir:system [ fhir:v "http://hl7.org/fhir/observation-statistics"^^xsd:anyURI ] ; fhir:version [ fhir:v "3.0.2" ] ; fhir:code [ fhir:v "regression" ] ; fhir:display [ fhir:v "Regression" ] ] ) ] . #
IG © 2025+ FHIR Infrastructure. Package hl7.fhir.uv.xver-r3.r4#0.0.1-snapshot-2 based on FHIR 4.0.1. Generated 2025-09-13
Links: Table of Contents |
QA Report
| Version History |
|
History