[1] Univ Texas MD Anderson Canc Ctr, Dept Behav Sci, Unit 1330,POB 301439, Houston, TX 77030 USA
[2] Southern Illinois Univ, Dept Psychol, Carbondale, IL USA
[3] Uniformed Serv Univ Hlth Sci, Dept Med & Clin Psychol, Bethesda, MD 20814 USA
[4] Med Coll Wisconsin, Dept Psychiat & Behav Med, Milwaukee, WI 53226 USA