[1] SMITHKLINE BEECHAM PHARMACEUT, DEPT PHYS & STRUCT CHEM, KING OF PRUSSIA, PA 19406 USA
[2] SMITHKLINE BEECHAM PHARMACEUT, DEPT PHARMACOL, KING OF PRUSSIA, PA 19406 USA
[3] SMITHKLINE BEECHAM PHARMACEUT, DEPT CELLULAR BIOCHEM, KING OF PRUSSIA, PA 19406 USA