[1] UNIV SASKATCHEWAN,DEPT PHARMACOL,SASKATOON S7N 0W0,SASKATCHEWAN,CANADA
[2] UNIV COPENHAGEN,PANUM INST,BIOCHEM DEPT A,DK-2200 COPENHAGEN N,DENMARK
[3] ROYAL DANISH SCH PHARM,BIOCHEM LAB,DK-2100 COPENHAGEN O,DENMARK
[4] ROYAL DANISH SCH PHARM,DEPT CHEM BC,DK-2100 COPENHAGEN O,DENMARK