<?xml version="1.0" encoding="UTF-8"?><SearchParameter xmlns="http://hl7.org/fhir"><id value="patient-extensions-Patient-age"/><url value="http://hl7.org/fhir/SearchParameter/patient-extensions-Patient-age"/><name value="age"/><code value="age"/><base value="Patient"/><type value="number"/><description value="Searches for patients based on age as calculated based on current date and date of birth.  Deceased patients are excluded from the search."/><xpath value="f:Patient/f:birthDate"/><xpathUsage value="normal"/></SearchParameter>