مؤلف: Helmut Frohnhofen

Adjunct Prof. Helmut Frohnhofen is a physician for internal medicine, geriatrics, palliative medicine and sleep medicine. He is also a somnologist (DGSM) and a member of the Faculty of Health at the University of Witten-Herdecke. He is head of the Department of Geriatric Medicine at the Alfried Krupp Hospital in Essen. Prof. Nikolaus Netzer is a physician for internal medicine, pneumologist, geriatrician and sleep physician as well as a somnologist (DGSM and ESRS). He heads the Ghersburg Geriatric Clinic in Bad Aibling and the Hermann Buhl Institute for Hypoxia and Sleep Medicine Research. He also works at the Institute for Sports Science at the University of Innsbruck.