[1] KAROLINSKA INST,DEPT HISTOL,S-10401 STOCKHOLM 60,SWEDEN
[2] KAROLINSKA INST,DEPT PHARMACOL,S-10401 STOCKHOLM 60,SWEDEN
[3] UNIV UPPSALA,DEPT PHARMACOL,S-75105 UPPSALA,SWEDEN
[4] UNIV LIVERPOOL,DEPT PHYSIOL,LIVERPOOL L69 3BX,ENGLAND
[5] UNIV NEWCASTLE UPON TYNE,MRC,NEUROENDOCRINOL UNIT,NEWCASTLE TYNE NE1 7RU,TYNE & WEAR,ENGLAND
[6] UNIV MINNESOTA,DEPT ANAT,MINNEAPOLIS,MN 55455
[7] MCGILL UNIV,MRC,DEPT PHARMACOL & THERAPEUT,QUEBEC CITY,QUEBEC,CANADA
[8] NYU,DEPT PSYCHIAT,NEW YORK,NY 10003
[9] ROCKEFELLER UNIV,MOLEC & CELLULAR NEUROSCI LAB,NEW YORK,NY 10021
[10] SALK INST BIOL STUDIES,SAN DIEGO,CA 92138
[11] STANFORD UNIV,MED CTR,SCH MED,DEPT PSYCHIAT & BEHAV SCI,STANFORD,CA 94305
[12] PENN STATE UNIV,MILTON S HERSHEY MED CTR,DEPT PHYSIOL,HERSHEY,PA 17033
[13] WELLCOME RES LABS,RES TRIANGLE PK,NC 27709