1. Department of Medicine, University of Washington, Seattle, Washington, USA
2. Hutchinson Institute for Cancer Outcomes Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
3. Department of Medicine, University of Rochester, Rochester, New York, USA
4. Department of Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, Ohio, USA
5. Department of Medicine, Medical University of Vienna, Vienna, Austria
6. Department of Internal Medicine, University of Perugia, Perugia, Italy
7. Department of Medicine, University of Southern California, Los Angeles, California, USA
8. Department of Medicine, Université Paris Descartes, Paris, France
9. Cancer Clinical Research Unit, Princess Margaret Cancer Centre, Toronto, Ontario, Canada