Kliniken der Stadt Köln gGmbH Merheim, Cologne, NRW, Germany
University of Cologne, Department of Orthopaedics/Trauma surgery, Cologne, NRW, Germany
Center for Integrated Oncology, Dep.I of Internal Medicine, University Hospital Cologne, Cologne, Germany
University of Cologne, NICU, Cologne, NRW, Germany
Neonatologische Intensivstation, Cologne, NRW, Germany
University of Cologne, Cologne, Germany
Centre of Ophthalmology, University of Cologne, Cologne, NRW, Germany
Saint-Pierre University Hospital; Department of Infectious Diseases, Brussels, Belgium
CHARITÉ Berlin, Berlin, Germany
University of Bonn, Bonn, Germany
Medical Clinic for Haematology and Oncology, Cologne, NRW, Germany
Prosper-Hospital, Recklinghausen, Germany
Johannes-Gutenberg-Universität Mainz, Mainz, Germany