Complex sentence: He was a founding member and the first President of the AGPA, which was keen to be well-recognized by psychiatrists; all of the 12 direct successors of the non-medical practitioner Slavson were in fact psychiatrists.
Split into simpler sentences: He was a founding member and the first President of the AGPA, which was keen to be well-recognized by psychiatrists. All of the 12 direct successors of the non-medical practitioner Slavson were in fact psychiatrists.