1. Department of Dermatology, Environmental Medicine and Health Theory Osnabrück University Osnabrück Germany
2. Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm) Osnabrück University Osnabrück Germany
3. Amsterdam University Medical Center (UMC), Department of Public and Occupational Health University of Amsterdam Amsterdam The Netherlands
4. Laboratory for Analytical Chemistry, Department of Chemistry and Biochemistry, Faculty of Food Technology and Biotechnology University of Zagreb Zagreb Croatia