Hospital Central Instituto de Prevision Social, Asuncion, Dep. Central, Paraguay
Thoraxclinic at the University Hospital Heidelberg, Heidelberg, Baden-Wuerttemberg, Germany
Dep of Ophthalmology, University of Mannheim, Mannheim, Germany
Dep. Medicine II, University Hospital Mannheim, Mannheim, Germany
University Heidelberg - Dep. Gastroenterology, Heidelberg, Germany
Intensive Care Unit, Clinic of Anesthesiology, Heidelberg, Germany
Clinical Study Center Surgery, Department of Surgery, University of Heidelberg, Heidelberg, Germany
Medical University of Heidelberg, Department of Gastroenterology, Heidelberg, Germany
Klinik für Kinderheilkunde und Jugendmedizin, Heilbronn, Germany
University Pediatric Hospital, Heidelberg, Germany
University Hospital Heidelberg, Heidelberg, Germany