The concept classes used for the requested domains.
Arguments
cdm
A cdm reference via CDMConnector.
standardConcept
Character vector with one or more of "Standard",
"Classification", and "Non-standard". These correspond to the flags used
for the standard_concept field in the concept table of the cdm.
domain
Character vector with one or more of the OMOP CDM domains.
The results will be restricted to the given domains. Check the available
ones by running getDomains(). If NULL, all supported domains are included:
Condition, Drug, Procedure, Device, Observation, and Measurement.