1. European Hidradenitis Suppurativa Foundation e.V. Dessau Germany
2. Departments of Dermatology, Venereology, Allergology and Immunology Dessau Medical Center Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg Dessau Germany
3. Department of Dermatology Hôpital Erasme Universite Libre de Bruxelles Bruxelles Belgium
4. Department of Dermatology Howard University College of Medicine Washington DC USA
5. Division of Dermatology Department of Medicine National University Hospital Singapore
6. 4th Department of Internal Medicine National and Kapodistrian University of Athens Medical School Athens Greece
7. Section of Dermatology Department of Clinical Medicine and Surgery University of Naples Federico II Naples Italy
8. The Rockefeller University New York NY USA
9. Division of Cutaneous Science Department of Dermatology Nihon University School of Medicine Tokyo Japan
10. Division of Dermatology Hospital Universitario Marqués de Valdecilla University of Cantabria IDIVAL Santander Spain
11. Department of Surgery Clinique du Val d’Ouest (Lyon), ResoVerneuil (Paris) and Groupe de Recherche en Proctologie de la Société Nationale Française de ColoProctologie Paris France
12. Faculty of Medicine Memorial University of Newfoundland, and NewLab Clinical Research Inc St. John's Canada
13. Department of Dermatology Henry Ford Hospital Wayne State University Detroit MI USA
14. Department of Dermatology Ankara Numune Training and Research Hospital Ankara Turkey
15. Department of Dermatology University Medical Centre Groningen University of Groningen Groningen The Netherlands
16. INSERM Créteil France
17. Department of Dermatology, Inselspital Bern University Hospital Bern Switzerland
18. Department of Dermatology & Academic Wound Healing Division of Infection and Immunity Cardiff University Cardiff UK
19. Department of Dermatology Zealand University Hospital Roskilde Denmark
20. Department of Dermatology RenJi Hospital School of Medicine Shanghai Jiaotong University Shanghai China
21. Department of Dermatology Beth Israel Deaconess Medical Center and Harvard Medical School Boston MA USA
22. Department of Dermatology Penn State Milton S. Hershey Medical Center Hershey PA USA
23. Dermatology Department Paul Sabatier University University Hospital of Toulouse Toulouse France
24. Department of Dermatology Department of Immunology Department of Molecular Genetics and Microbiology Duke University Durham NC USA
25. Department of Dermatology Hospital of Manises Valencia Spain
26. Dermatology Unit Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico Milan Italy
27. Department of Pathophysiology and Transplantation Università degli Studi di Milano Milan Italy
28. Department of Dermatology, Venereology and Allergology Wrocław Medical University Wrocław Poland
29. Institut Pasteur Paris France
30. Centre for Rheumatic Diseases King’s College London, and Department of Rheumatology King’s College Hospital London UK
31. Translational Science and Experimental Medicine Early Respiratory and Immunology Biopharmaceuticals R&D AstraZeneca Gothenburg Sweden
32. Fort HealthCare Fort Atkinson WI USA
33. Department of Dermatology Emory University School of Medicine Atlanta GA USA
34. Alicante University General Hospital Alicante Institute for Health and Biomedical Research (ISABIAL‐FISABIO Foundation) Alicante Spain
35. Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery University of Miami Miller School of Medicine Miami FL USA
36. Division of Dermatology University of Washington Seattle WA USA
37. Department of Dermatology Erasmus University Medical Center Rotterdam The Netherlands
38. Autoimmunity, Transplantation and Inflammation Novartis Institutes for BioMedical Research Novartis Pharma AG Basel Switzerland
39. Division of Dermatological Allergology Department of Dermatology Faculty of Medicine University of Debrecen Debrecen Hungary
40. Department of Dermatology Nordland Hospital Trust Bodø Norway
41. Department of Dermatology Plastic Surgery Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China