1. Medical Clinic 1, Division of Oncology and Palliative Care, HELIOS Klinikum Wuppertal, Wuppertal, Germany
2. Division of Emergency and Primary Care, HELIOS Klinikum Wuppertal, Wuppertal, Germany
3. Department of Hygiene, HELIOS Klinikum Wuppertal, Wuppertal, Germany
4. Medical Clinic 1, Division of Nephrology, HELIOS Klinikum Wuppertal, Wuppertal, Germany