[1] BOSTON UNIV,SCH MED,DEPT SURG,BOSTON,MA 02118
[2] YALE UNIV,SCH MED,DEPT PATHOL,NEW HAVEN,CT 06510
[3] CARDINAL CUSHING HOSP,DEPT PULMONARY MED,BROCKTON,MA 02401
[4] BOSTON UNIV,SCH MED,DEPT MED,BOSTON,MA 02118
[5] MT AUBURN HOSP,CAMBRIDGE,MA
[6] ALBERT EINSTEIN SCH MED,DEPT MED,BRONX,NY 10461
[7] BOSTON UNIV,SCH MED,THORAC SERV,BOSTON,MA 02118
[8] MIT,CAMBRIDGE,MA 02177