[1] University of Basel,Division of Clinical Pharmacy and Epidemiology, Department of Pharmaceutical Sciences, Basel Pharmacoepidemiology Unit
[2] Associated Institute of the University of Zurich,National Poisons Centre, Tox Info Suisse
[3] Ente Ospedaliero Cantonale Lugano,Division of Clinical Pharmacology and Toxicology, Department of Internal Medicine
[4] University Hospital Basel,Division of Clinical Neurophysiology, Department of Neurology
[5] University of Basel,Division of Clinical Pharmacology and Toxicology, Department of Pharmaceutical Sciences
[6] Boston University School of Public Health,Boston Collaborative Drug Surveillance Program
[7] University Hospital Basel,Hospital Pharmacy
[8] Zuger Kantonsspital,Medical Department