European evidence-based (S3) guidelines for the treatment of acne.

†Division of Evidence-Based Medicine, Klinik für Dermatologie, Charité-Universitätsmedizin Berlin, Berlin, Germany, ‡Department of Dermatocancerolgy, Nantes University Hospital, Hôtel-Dieu, Nantes, France, §Department of Clinical and Experimental Medicine, Section of Dermatology, University of Ferrara, Ferrara, Italy, –Dermatologist in Private Practice, Munich, Germany, **Department of Dermatology and Wound Healing, Cardiff University School of Medicine, Cardiff, UK, ††Centre of Dermatovenereology, Vilnius University, Hospital Santariskiu Klinikos; Clinic of Infectious Diseases, Dermatovenereology and Microbiology Faculty of Medicine Vilnius University, Vilnius, Lithuania, ‡‡Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark, §§Department of Dermatology, Harrogate and District Foundation Trust, Harrogate, North Yorkshire, UK, ––Dermatology Department, Alcorcon University Hospital Foundation, Alcorcón, Madrid, Spain, ***Department of Dermatology and Venereology, University of Frankfurt, Frankfurt, Germany, †††Department of Medicine, Division of Dermatology and Venereology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden, ‡‡‡Private practice, Brussels, Belgium, §§§Dermatology Clinic, Aalborg, Denmark, –––Department of Dermatovenereology, Clinical Hospital Centre ‘‘Sestre milosrdnice’’, Zagreb, Croatia, ****Department of Dermatology, Venerology, Allergology and Immunology, Dessau Medical Center, Dessau, Germany, ††††Department of Dermatology and Venereology, University of Magdeburg, Magdeburg, Germany *Correspondence: A. Nast. E-mail: [email protected]