1. Departments of Surgery, The State University of New York, Health Science Center of Brooklyn,
2. Departments of Surgery, The State University of New York, Health Science Center of Brooklyn, Brooklyn Harbor View Veterans Administration Hospital, Brooklyn, New York
3. Departments of Surgery, The State University of New York, Health Science Center of Brooklyn
4. Centre Hospitalier Intercommunal, Poissy, France
5. Departments of Surgery, The State University of New York, Health Science Center of Brooklyn, Lutheran Medical Center Brooklyn, New York