[1] Baptist Hosp Southeast Texas, Dept Internal Med, Beaumont, TX USA
[2] Univ Texas MD Anderson Canc Ctr, Dept Epidemiol, Houston, TX USA
[3] Univ Texas MD Anderson Canc Ctr, Heamtol Oncol Fellowship, Houston, TX USA
[4] Robert Wood Johnson Univ Hosp, Dept Radiat Oncol, New Brunswick, NJ USA
[5] Jacobi Med Ctr, Dept Internal Med, New York, NY USA
[6] Case Western Reserve Univ, Dept Pathol, Cleveland, OH USA
[7] Baylor Coll Med, Div Gastroenterol & Hepatol, Houston, TX USA
[8] Univ Arizona, Div Hematol Oncol, Coll Med, Tucson, AZ USA
[9] Univ Texas MD Anderson Canc Ctr, Div Canc Prevent Populat Sci, Houston, TX USA
[10] Univ Texas MD Anderson Canc Ctr, Dept Gastrointestinal Med Oncol, Houston, TX USA