[1] YALE UNIV,SCH MED,DEPT THERAPEUT RADIOL,NEW HAVEN,CT 06510
[2] YALE UNIV,SCH MED,DEPT PHARMACOL,NEW HAVEN,CT 06510
[3] YALE UNIV,SCH MED,DEPT EPIDEMIOL,NEW HAVEN,CT 06510
[4] YALE UNIV,SCH MED,DEPT INTERNAL MED,NEW HAVEN,CT 06510
[5] VET ADM MED CTR,NEW HAVEN,CT