...
| (AuditRecord?, Signature?, Annotation*, FormData (Deprecated)* ) |
Attributes:
| StudyEventOID | oidref | Reference to the StudyEventDef. | |
| StudyEventRepeatKey | repeatKey | (optional) | A key used to distinguish between repeats of the same type of study event for a single subject. |
| TransactionType | (Insert | Update | Remove | Upsert | Context) | (optional) | The TransactionType attribute need not be present in a Snapshot document. |
...