1 Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
2 Human Microbiome Research Program (HUMI), Medical Faculty, University of Helsinki, Helsinki, Finland.
3 Department of Dermatology, University Hospital Düsseldorf, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany.
4 Department of Dermatology, Venereology and Oncodermatology, Medical Faculty, University of Pécs, Pécs, Hungary.
5 Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden.
6 One Health Institute, Faculty of Health Sciences, University of Debrecen, Debrecen, Hungary.
7 Department of Dermatology, Allergology and Venereology, University of Helsinki and Helsinki University Hospital, Inflammation Centre, Helsinki, Finland.
8 St John's Institute of Dermatology, Kings College London, London, UK.