1. Clinical Research Center for Hair and Skin Science Department of Dermatology and AllergyCharité – Universitätsmedizin Berlin Berlin Germany
2. Department of Clinical Quality and Risk Management Charité – Universitätsmedizin Berlin Berlin Germany
3. Department of Biometry and Clinical Epidemiology Charité – Universitätsmedizin Berlin Berlin Germany
4. Department of Public Health and Primary Care Skin Integrity Research Group (SKINT) University Centre for Nursing and Midwifery Ghent University Ghent Belgium