[1] SANDOZ LTD,PRECLIN RES DEPT,CH-4002 BASEL,SWITZERLAND
[2] GLAXO GRP RES LTD,DIV ASTROPHYS,WARE SG12 0DJ,HERTS,ENGLAND
[3] MERRELL DOW RES INST,STRASBOURG CTR,F-67084 STRASBOURG,FRANCE
[4] UNIV SYDNEY,DEPT PHARMACOL,SYDNEY,NSW 2006,AUSTRALIA
[5] ERASMUS UNIV,DEPT PHARMACOL,3000 DR ROTTERDAM,NETHERLANDS