Two things:
* I think for even more clarity, `patientId` should be `patientUid`. We made the change for the `Patient` resource (`id` -> `uid`). 
* Since we have a bunch of urls that are prefixed with `/patients/:patientId`, could we also refactor that out, like `pb.apiRoutePrefix`. It might be nice to have a function called `apiPrefix()` that would take as parameters the API `version` and a boolean for whether to include the `/patients/:patientId` prefix to make things even more consolidated.