1. Podologic Office, Straßfurt, Germany
2. Podologic Office, Hamm, Germany
3. Podologic Office, Friedberg, Germany
4. Medical Information Management, Fliedner Fachhochschule, Düsseldorf, Germany
5. Clinic for Vascular Medicine, HELIOS Klinik, Krefeld, Germany
6. University Clinic for Nephrology and Hypertension, Diabetology and Endocrinology, Otto-von-Guericke Universität, Magdeburg, Germany