Observation 
subject 
reference 
identifier Documentation for this format| Name | Flags | Card. | Type | Description & Constraints |
|---|---|---|---|---|
| Observation |
0..* | Variant | Variant | |
| subject |
Σ | 1..1 | Reference(RareLink IPS Patient) | Who and/or what the observation is about |
| reference |
ΣC | 0..1 | string | Literal reference, Relative, internal or absolute URL |
| identifier |
Σ | 0..1 | Identifier | Logical reference, when literal reference is not known |
| Documentation for this format | ||||