Medical school and clinical training in pediatrics and pediatric cardiology (German Heart Institute Berlin) in Berlin/Germany // Chair and professorship for Paediatric Cardiology at University of Zurich, CH // Director/Head (Chefarzt) of Division of Paediatric Cardiology and Congenital Heart Defects and Head of Interventional Cardiology for Congenital Heart Defects, Children’s University Hospital Zurich, Zurich, CH // Senior Consultant for Interventional Cardiology in Adults with Congenital Heart Defects, USZ, Zurich, CH