1. Department of General Internal Medicine, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
2. Department of Chemical Endocrinology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
3. Department of Endocrinology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
4. Department of Clinical Pharmacy, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
5. Department of General Internal Medicine, Catharina Hospital, Eindhoven, The Netherlands.