1. Institute of Clinical Nursing Science, Corporate Member of Freie Universität Berlin and Humboldt‐Universität zu Berlin Charité – Universitätsmedizin Berlin Germany
2. Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Corporate Member of Freie Universität Berlin and Humboldt‐Universität zu Berlin Charité – Universitätsmedizin Berlin Germany
3. HiPP GmbH & Co. Vertrieb KG Pfaffenhofen Germany
4. Institute of Biometry and Clinical Epidemiology, Corporate Member of Freie Universität Berlin and Humboldt‐Universität zu Berlin Charité – Universitätsmedizin Berlin Germany