1. Department of General Internal Medicine/Infectious Diseases; Radboud University Nijmegen Medical Centre; Nijmegen; the Netherlands
2. Unité d'Immuno-Hématologie; Hôpital Saint-Louis; AP-HP and Univ Paris Diderot; Paris; France
3. Department of Dermatology and Allergology; Ludwig-Maximilians University; Munich; Germany
4. Department of Dermatology; Radboud University Nijmegen Medical Centre; Nijmegen; the Netherlands
5. Norfolk and Norwich University Hospital; Norwich; UK
6. Department of Dermatology and Allergy; Charité - Universitätsmedizin Berlin; Berlin; Germany
7. Division of Medicine; National Amyloidosis Centre; University College London Medical School; London; UK
8. Faculté de Médecine; Université de Strasbourg, and Clinique Dermatologique; Hôpitaux Universitaires de Strasbourg; Strasbourg; France
9. Servicio de Reumatologia; Hospital Universitario Marqués de Valdecilla; Santander; Spain
10. Departments of Dermatology and Laboratory Medicine and Pathology; Mayo Clinic; Rochester; MN; USA
11. Department of Haematology; University of Bari Medical School; Bari
12. Department of Dermatology; University of Genova; Genova; Italy
13. 3; rue GB Shaw, 75015; Paris
14. 12; rue des grands champs; Brunstatt
15. Faculté de Médecine; Université de Strasbourg, and Service de Rhumatologie; Hôpitaux Universitaires de Strasbourg; Strasbourg; France