The Server shall be able to send a response in each of the following MIME types:
If the contentType parameter is not present in the request, or contains only MIME types that the Server does not support, the response shall contain a text/html MIME type.
It is recommended that the Server also support the following MIME types:
a "CDA" MIME type, in conformance to HL7 CDA, e.g. application/x-hl7-cda-level-one+xml.
The Server may also support other MIME types.