[1] Univ Groningen, Dept Pharm, Groningen, Netherlands
[2] Med Ctr Leeuwarden, Dept Clin Pharm & Pharmacol, Leeuwarden, Netherlands
[3] Locat Med Ctr Leeuwarden, Certe Med Diagnost & Advice, Leeuwarden, Netherlands
[4] Pathol Friesland, Leeuwarden, Netherlands
[5] Univ Med Ctr Groningen, Dept Epidemiol, Groningen, Netherlands
[6] Med Ctr Leeuwarden, Sci Bur, Leeuwarden, Netherlands
[7] Dept Internal Med, Med Ctr Leeuwarden, Leeuwarden, Netherlands