Comments
I have concerns with this resource in general. In Canada, we never associate a Practitioner in the healthcare system with their interactions as a Patient within the healthcare system. This may be different in different countries. Also, this resource seems a large step backwards, FHIR originally had a Person in addition to Patient and Practitioner and the implementors said it made implementation needlessly complex. Patient already has a link class to link together multiple occurrences for an single individual, what use case is this solving? If it is necessary to link a Practitioner to their occurence as a Patient, then Practitioner should have a link (and I would need to be convinced that this was really something that the moajority of applications do)

Grahame's Comments
need to add a little more documentation, but also, this is not the same as we had - Person is solving a different problem

Disposition
Not Persuasive

Disposition Comment
Person allows linking a variety of types. It can be used to link multiple Patient records, link Patient and RelatedPerson records. It can also be used to link multiple Practitioner records. Will add language to make these multiple potential uses.