1. Waldenström Clinic, Cancer Division; University College London Hospitals NHS Foundation Trust; London UK
2. Department of Haematology; Academic Medical Centre; Amsterdam the Netherlands
3. Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute; Harvard Medical School; Boston MA USA
4. Department of Clinical Therapeutics; National and Kapodistrian University of Athens; Athens Greece
5. Department of Haematology; North Estonia Medical Centre; Tallinn Estonia
6. AP-HP Hôpital Pitié Salpêtrière; UPMC Univ. Paris 6 GRC-11, Grechy; Paris France
7. Centre for Research and Treatment of Systemic Amyloidosis; University of Pavia; Pavia Italy
8. Cancer Centre; Sint Antonius Ziekenhuis; Nieuwegein the Netherlands
9. Centre for Neuromuscular Diseases; National Hospital for Neurology and Neurosurgery; London UK