Aachen University Hospital; Medical Clinic I - Cardiology, Pneumology, Angiology and Internal Intensive Medicine, Aachen, NRW, Germany
Paediatric Clini; RWTH Aachen University Hospital, Aachen, NRW, Germany
Department of Geriatrics, University Hospital RWTH Aachen Aachen, Aachen, North Rhine-Westphalia, Germany
RWTH Aachen University Hospital, Aachen, Germany
Universitätsklinikum Aachen, Aachen, NRW, Germany
Department of Internal Medicine I RWTH Aachen University Hospital, Aachen, NRW, Germany
Department of Dental Medicine 1 (Periodontology), Timişoara, Romania
Charité Centrum Zahn-, Mund- und Kieferheilkunde, Parodontologie und Synoptische Zahnmedizin, Berlin, Germany
Universitätsklinikum RWTH Aachen, Klinik für Zahnerhaltung, Parodontologie u. Präventive Zahnheilkunde, Aachen, Germany
University Hospital RWTH Aachen University, Department of Anesthesiology, Aachen, Germany
Medical Clinic II, University Hospital Aachen, Aachen, Germany
University of Utah Medical Center, Salt Lake City, Utah, United States
Sunnybrook Health Sciences Centre, Toronto, Canada
University hospital RWTH Aachen, Aachen, Germany