Table 12.

Challenges and open questions related to Fast Healthcare Interoperability Resources (FHIR).

Challenges	References
Implementations of FHIR in an application	[8,12,40,42,48,49,62,64,77]
Standards complexity	[8,27,62,81]
Adoptions	[40,56,83]
FHIR maintenance and specification	[41,42,62]
RESTaful approach	[56,59,65,73]
Mapping/migration challenging	[71,75,81]
Miscellaneous	[12,49]

^aREST: representational state transfer.