1. Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
2. Weill Cornell Medical College, New York, NY, USA
3. Department of Investigational Cancer Therapeutics, Sarah Cannon Research Institute and Tennessee Oncology, Nashville, TN, USA
4. Department of Medicine, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA
5. Department of Medicine, University of California San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, CA, USA
6. David Geffen School of Medicine at UCLA, Los Angeles, CA
7. Pfizer Inc., New York, NY, USA
8. Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA