[1] TUFTS UNIV,NEW ENGLAND MED CTR,DIV CLIN PHARMACOL,BOX 1007,117 HARRISON AVE,BOSTON,MA 02111
[2] TUFTS UNIV,SCH MED,DEPT PSYCHIAT,DIV CLIN PHARMACOL,BOSTON,MA 02111
[3] TUFTS UNIV,SCH MED,DEPT MED,BOSTON,MA 02111
[4] UNIV BONN,MED KLIN,D-5300 BONN,FED REP GER
[5] NEW ENGLAND MED CTR,BOSTON,MA 02111