1 Pediatric Pharmacology and Pharmacometrics, University Children`s Hospital Basel (UKBB), University of Basel, Basel, Switzerland; Pediatric Rheumatology, University Children`s Hospital Basel (UKBB), University of Basel, Basel, Switzerland. Electronic address: tatjana.welzel@ukbb.ch.
2 Pediatric Pharmacology and Pharmacometrics, University Children`s Hospital Basel (UKBB), University of Basel, Basel, Switzerland; Pediatric Cardiology & Congenital Heart Diseases, University Children's Hospital Heidelberg, Heidelberg, Germany.
3 Pediatric Cardiology, University Children`s Hospital Basel (UKBB), University of Basel, Basel, Switzerland.
4 Pediatric Pharmacology and Pharmacometrics, University Children`s Hospital Basel (UKBB), University of Basel, Basel, Switzerland; Division of Clinical Pharmacology, Children's National Health System, Washington, DC.