aDepartment of Clinical Pharmacy, Wilhelmina Hospital Assen, Assen

bDepartment of Psychiatry, University of Groningen, University Medical Centre Groningen, Groningen

cUnit of PharmacoTherapy, Epidemiology and Economics, Department of Pharmacy, University of Groningen, Groningen

dPsychiatric Hospital GGZ Drenthe, Assen

eDepartment of Psychiatry, Radboud University and Radboud University Medical Centre Nijmegen, Nijmegen

fDepartment of Clinical Chemistry, Erasmus University Medical Centre Rotterdam, Rotterdam

gDepartment of Clinical Pharmacy and Clinical Pharmacology, Medical Centre Leeuwarden, The Netherlands

hDepartment of Psychiatry, Warneford Hospital, University of Oxford, Oxford, UK

Received 31 May 2018 Accepted 6 September 2019

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Correspondence to Hans Mulder, PharmD, PhD, Europaweg-Zuid 1, 9401 RK Assen, The Netherlands, Tel: +31 0 592 325 450; fax: +31 0 592 325 601; e-mail: [email protected]