[1] KAROLINSKA INST, DEPT MED NUTR, S-10401 STOCKHOLM 60, SWEDEN
[2] KAROLINSKA HOSP, DEPT CLIN CHEM, S-10401 STOCKHOLM, SWEDEN
[3] HUDDINGE HOSP, DEPT MED, S-14186 HUDDINGE, SWEDEN
[4] KAROLINSKA INST, DEPT PHARMACOL, S-10401 STOCKHOLM 60, SWEDEN
[5] AB LEO, RES LABS, S-25100 HELSINGBORG, SWEDEN