Uni-Klinik Köln AöR, Cologne, North Rhine Westphalia, Germany
Center of Ophthalmology, University of Cologne, Cologne, NRW, Germany
University Hospital Cologne, Cologne, NRW, Germany
University Hospital of Cologne, Cologne, Germany
1st Dept. of Medicine, Cologne University Hospital, Cologne, NRW, Germany
Center for Integrated Oncology (CIO), University Hospital Cologne, Cologne, Northrhine-Westphalia, Germany
University Hospital of Cologne, Cologne, Germany
Medical Clinic I and Department of Pharmacology, University of Cologne, Cologne, Germany
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