1. Memorial Sloan-Kettering Cancer Ctr, New York, NY; UCSF, San Francisco, CA; MA Gen Hosp, Boston, MA; Univ of Michigan, Ann Arbor, MI; Fox Chase Cancer Ctr, Philadelphia, PA; Univ of Wisconsin, Madison, WI; Cleveland Clinic Fdn, Cleveland, OH; Duke Univ, Durham, NC; Pfizer Inc., San Diego, CA