Complex sentence: In California and in many states, both the peer review hearing and the investigation have been held to be part of a professional disciplinary proceeding, so that the penalty applies in the event of usage of PSO data in either.
Split into simpler sentences: In California and in many states, both the peer review hearing and the investigation have been held to be part of a professional disciplinary proceeding. This penalty therefore applies in the event of usage of PSO data in either.