f:Observation subject: minimum cardinality of 'subject' is 1 effective[x]: minimum cardinality of 'effective[x]' is 1 issued: minimum cardinality of 'issued' is 1 f:Observation/f:category id: maximum cardinality of 'id' is 1 text: maximum cardinality of 'text' is 1 f:Observation/f:category/f:coding id: maximum cardinality of 'id' is 1 system: minimum cardinality of 'system' is 1 system: maximum cardinality of 'system' is 1 version: maximum cardinality of 'version' is 1 code: maximum cardinality of 'code' is 1 display: maximum cardinality of 'display' is 1 userSelected: maximum cardinality of 'userSelected' is 1 f:Observation/f:code id: maximum cardinality of 'id' is 1 text: maximum cardinality of 'text' is 1 f:Observation/f:code/f:coding id: maximum cardinality of 'id' is 1 system: minimum cardinality of 'system' is 1 system: maximum cardinality of 'system' is 1 version: maximum cardinality of 'version' is 1 code: maximum cardinality of 'code' is 1 display: maximum cardinality of 'display' is 1 userSelected: maximum cardinality of 'userSelected' is 1 id: maximum cardinality of 'id' is 1 system: minimum cardinality of 'system' is 1 system: maximum cardinality of 'system' is 1 version: maximum cardinality of 'version' is 1 code: maximum cardinality of 'code' is 1 display: maximum cardinality of 'display' is 1 userSelected: maximum cardinality of 'userSelected' is 1 f:Observation/f:value[x] 1 value: minimum cardinality of 'value' is 1 unit: minimum cardinality of 'unit' is 1 system: minimum cardinality of 'system' is 1 code: minimum cardinality of 'code' is 1 f:Observation/f:value[x]/f:extension 1 url: minimum cardinality of 'url' is 1 value[x]: minimum cardinality of 'value[x]' is 1