Approach:</em> Given that a system is using Provenance records. 
When one needs the Provenance records in addition to the results of a query on other records (e.g. Query on MedicationRequest), 
then one uses reverse include to request that all Provenance records also be returned. 
That is to add <code>?_revinclude=Provenance:target</code>. 

For details, see <a href="search.html#revinclude">_revinclude</a>.
</p>


<a name="deId"></a>
<h4>De-Identification, pseudonymization, anonymization</h4>
<p>
De-Identif