1. Washington Univ Sch of Medicine, St Louis, MO; Phelps County Regional Medcl Ctr, Rolla, MO; Radiation Therapy Oncology Group, Philadelphia, PA; Medcl Coll of Wisconsin, Milwaukee, WI; Univ of Wisconsin, Madison, WI; Univ of CA Davis, Davis, CA; Univ of Texas Southwestern, Dallas, TX