[1] City Hope Natl Med Ctr, Dept Populat Sci, Duarte, CA 91010 USA
[2] City Hope Natl Med Ctr, Dept Surg, Duarte, CA 91010 USA
[3] Univ Arizona, Coll Nursing, Tucson, AZ USA
[4] Univ Arizona, Canc Ctr, Tucson, AZ USA
[5] Univ Arizona, Mel & Enid Zuckerman Coll Publ Hlth, Tucson, AZ USA
[6] Univ Penn, Dept Surg, Perelman Sch Med, Surg, Philadelphia, PA 19104 USA