f:Observation/f:component/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
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