1. Sarah Cannon Research Institute, Nashville; West Clinic, Memphis, TN; Penn State Cancer Institute, Hershey, PA; Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Lebanon, NH; M. D. Anderson Cancer Center at Orlando, Orlando, FL; North County Oncology Medical Clinic, Oceanside; Amgen, Thousand Oaks; and Ida M. and Cecil H. Green Cancer Center, Scripps Clinic, La Jolla, CA