1. Department of Geriatrics; Gelre Hospital; Apeldoorn the Netherlands
2. Department of Geriatrics; University Medical Center Utrecht; Utrecht the Netherlands
3. Expertisecentre Pharmacotherapy in Old Persons; Utrecht the Netherlands
4. Department of Clinical Pharmacy; University Medical Center Utrecht; Utrecht the Netherlands
5. Department of Pharmacoepidemiology and Clinical Pharmacology; Faculty of Science; Utrecht Institute for Pharmaceutical Sciences; Utrecht University; Utrecht the Netherlands
6. Department of Geriatrics; Jeroen Bosch Hospital; Hertogenbosch the Netherlands