1. Medical Clinic 2, Caritas-Krankenhaus, Bad Mergentheim, Germany
2. Medical Clinic, Klinikum Märkisch Oderland, Wriezen, Germany
3. Medical Clinic 2, Klinikum Meiningen, Meiningen, Germany
4. Department of Pathology, Caritas-Krankenhaus, Bad Mergentheim, Germany