[1] UNIV GRONINGEN, DEPT MED CHEM, 9713 AW GRONINGEN, NETHERLANDS
[2] UNIV GRONINGEN, DEPT PHARMACOL & THERAPEUT, CTR PHARM, 9713 AW GRONINGEN, NETHERLANDS
[3] F HOFFMANN LA ROCHE & CO LTD, DIV PHARMA, PRECLIN RES, CH-4002 BASEL, SWITZERLAND
[4] FREE UNIV AMSTERDAM, DEPT NEUROL, 1081 BT AMSTERDAM, NETHERLANDS