The Liver Research Center, Department of Medicine, Rhode Island Hospital and Brown Medical School, Providence, Rhode Island, USA and Kinderklinik der Johannes-Gutenberg-Universitt, Mainz, Germany;
Kinderklinik der Johannes-Gutenberg-Universitt, Mainz, Germany;
Zentrum für Kinder-und Jugendmedizin, HELIOS Klinikum, Wuppertal, Witten-Herdecke-University, Germany;