1 Pediatric Neurology and Metabolic Medicine, Center for Pediatric and Adolescent Medicine and Center for Rare Disorders, University Hospital Heidelberg, Heidelberg, Germany
2 Pediatric Rheumatology, Center for Pediatric and Adolescent Medicine and Center for Rare Disorders, University Hospital Heidelberg, Heidelberg, Germany
3 Clinical Pharmacology and Pharmacoepidemiology, Cooperation Unit Clinical Pharmacy, University Hospital Heidelberg, Heidelberg, Germany
4 Quintiles, Epidemiology, Wilmington, NC USA
5 Pediatric Psychopharmacology, Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany