1. Saint Luke's Medical Center, Case Western Reserve University, and The Cleveland Clinic Foundation (Emeritus Staff), Cleveland, Ohio
2. Ohio University School of Osteopathic Medicine, Athens, and Grandview General Hospital, Dayton, Ohio
3. State University of New York at Buffalo, New York
4. Northeastern Universities, College of Medicine, Rootstown, Ohio
5. private practice, Dayton, Ohio
6. Saint Luke's Medical Center and Cleveland Clinic Foundation, Cleveland, Ohio
7. Niagara Frontier Environmental Research Foundation and Niagara County Health Department, Lockport, New York
8. Calspan Corporation, Buffalo, New York
9. Wisconsin College of Medicine, Milwaukee, Wisconsin