Pediatric Cardiology Training in Germany: First National Survey of Pediatric Cardiology Residents and Fellows by the “Junges Forum” of the DGPK - Horst, P. J.; Moosmann, J.; Lang, N.; Alkassar, M.; Bublies, E.; Kubicki, R.; Raschzok, S.; Steif, A.; Ziesenitz, V.; Zschirnt, M.; Michel, M. (The Thoracic and Cardiovascular Surgeon, 2019)