1. Department of Otorhinolaryngology, Allergy Center, Wiesbaden, Germany
2. Department of Otorhinolaryngology, Head and Neck Surgery, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
3. MACVIA-France, Contre les MAladies Chroniques pour un VIeillissement Actif en France European Innovation Partnership on Active and Healthy Ageing Reference Site, Montpellier, France
4. INSERM U 1168, VIMA: Ageing and chronic diseases Epidemiological and public health approaches, Villejuif, Université Versailles St-Quentin-en-Yvelines, Montigny le Bretonneux, France
5. Center for Clinical Trials, Zurich University Hospital, Zurich, Switzerland
6. Dept. of Dermatology, Zurich University Hospital, Zurich, Switzerland