Example: Heart rate records in Health Kit XML (exported from iOS Healthcare app)
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<Record type="HKQuantityTypeIdentifierHeartRate" sourceName="SmartBand 2" sourceVersion="1.0.3" unit="count/min" creationDate="2015-12-22 13:42:10 +0900" startDate="2015-12-22 13:42:00 +0900" endDate="2015-12-22 13:42:00 +0900" value="83">
<MetadataEntry key="HKHeartRateSensorLocation" value="2"/>
<Record type="HKQuantityTypeIdentifierHeartRate" sourceName="SmartBand 2" sourceVersion="1.0.3" unit="count/min" creationDate="2015-12-22 13:44:12 +0900" startDate="2015-12-22 13:43:00 +0900" endDate="2015-12-22 13:43:00 +0900" value="85">
<MetadataEntry key="HKHeartRateSensorLocation" value="2"/>
<Record type="HKQuantityTypeIdentifierHeartRate" sourceName="SmartBand 2" sourceVersion="1.0.3" unit="count/min" creationDate="2015-12-22 13:45:13 +0900" startDate="2015-12-22 13:44:00 +0900" endDate="2015-12-22 13:44:00 +0900" value="85">
<MetadataEntry key="HKHeartRateSensorLocation" value="2"/>
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