1. Department of Haematology St. James's University Hospital Leeds UK
2. CLL Center, Dana‐Farber Cancer Institute Boston Massachusetts
3. UC Irvine, Chao Family Comprehensive Cancer Center Irvine California
4. Division of Medical Oncology and Hematology Northwell Health Cancer Institute Lake Success New York
5. Wilmot Cancer Institute University of Rochester Medical Center Rochester New York
6. Vanderbilt‐Ingram Cancer Center Nashville Tennessee
7. Stanford Cancer Center Stanford University School of Medicine Stanford California
8. Peter MacCallum Cancer Centre St. Vincent's Hospital and University of Melbourne Melbourne Australia
9. Royal North Shore Hospital Sydney Australia
10. Division of Hematology and Hemostaseology Medical University of Vienna Wien Austria
11. UCSD Moores Cancer Center San Diego California
12. Hospital de la Santa Creu i Sant Pau Autonomous University of Barcelona Barcelona Spain
13. Niguarda Ca' Granda Hospital Milan Italy
14. Department of Leukemia University of Texas MD Anderson Cancer Center Houston Texas
15. The Ohio State University Comprehensive Cancer Center Columbus Ohio
16. The Leeds Teaching Hospitals St. James Institute of Oncology Leeds UK
17. Pharmacyclics LLC, an AbbVie Company Sunnyvale California