Affiliations Research 1977Assistant ProfessorUniversity Of Pennsylvania School Of Medicine1978Associate Research ProfessorUniversity Of Pennsylvania School Of Medicine1979[position unknown]University Of Pennsylvania School Of Medicine1975Assistant ProfessorUniversity Of Pennsylvania1976Assistant ProfessorUniversity Of Pennsylvania 1975[subject unknown]Independent1976[subject unknown]Independent Investigators1977[subject unknown]Independent1978[subject unknown]Independent1979[subject unknown]Independent