1. Department of Dermatology Hospital Universitari de Bellvitge, Universitat de Barcelona, IDIBELL, L'Hospitalet de Llobregat Barcelona Spain
2. Department of Dermatology Hospital de Viladecans Viladecans, Barcelona Spain
3. Department of Dermatology Hospital del Mar, IMAS‐IMIM Barcelona Spain
4. Research Unit Fundación Piel Sana AEDV Madrid Spain
5. Department of Dermatology, Hospital Clínic Universitat de Barcelona, IDIBAPS Barcelona Spain
6. Department of Dermatology Hospital Universitario Vírgen del Rocío Sevilla Spain
7. Department of Hematology Hospital Universitario Vírgen del Rocío. Instituto de Biomedicina de Sevilla (IBIS)/CSIC/Universidad de Sevilla Sevilla Spain
8. Department of Dermatology Fundación Jiménez Díaz Madrid Spain
9. Department of Hematology Hospital del Mar, IMAS‐IMIM Barcelona Spain
10. Department of Dermatology Hospital Universitario de Cruces Barakaldo Bizkaia Spain
11. Department of Hematology Hospital Universitario de Cruces Barakaldo Bizkaia Spain
12. Department of Dermatology Complejo Hospitalario Universitario Insular Materno‐Infantil, Las Palmas de Gran Canaria, Las Palmas Spain
13. Department of Hematology Complejo Hospitalario Universitario Insular Materno‐Infantil, Las Palmas de Gran Canaria, Las Palmas Spain
14. Department of Dermatology Hospital Santa Creu i Sant Pau Barcelona Spain
15. Department of Dermatology Hospital Universitario de Salamanca Salamanca Spain
16. Department of Dermatology Hospital Universitario Nuestra Señora de Candelaria Santa Cruz de Tenerife Spain
17. Department of Dermatology Complejo Hospitalario Universitario de Pontevedra Pontevedra Spain
18. Department of Dermatology Hospital de Basurto Bilbao Spain
19. Department of Dermatology Hospital Universitario La Fe Valencia Spain
20. Department of Dermatology Hospital Universitario Dr Peset Valencia Spain
21. Department of Dermatology Hospital Universitario Marqués de Valdecilla Santander Spain
22. Department of Dermatology Hospital General Universitario de Alicante, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL) Alicante Spain
23. Department of Dermatology Hospital Universitario de Navarra Pamplona, Navarra Spain
24. Department of Dermatology Hospital General Universitario de Valencia Valencia Spain
25. Department of Hematology Hospital Príncipe de Asturias Madrid Spain
26. Department of Dermatology Hospital Universitario 12 de Octubre, Institute I+12 Research Institute, Universidad Complutense Madrid Spain
27. Department of Dermatology Hospital Universitario Vírgen de Valme Sevilla Spain
28. Department of Dermatology Hospital Universitario Lozano Blesa Zaragoza Spain
29. Department of Hematology Institut Català d'Oncologia, Hospital Duran i Reynals, IDIBELL, L'Hospitalet de LLobregat Barcelona Spain