[1] Univ Arkansas Med Sci, Winthrop P Rockefeller Canc Inst, Behav Med, Little Rock, AR 72205 USA
[2] Univ Texas Hlth Sci Ctr Houston, Dept Neurol, McGovern Med Sch, Little Rock, AR USA
[3] Univ Texas Hlth Sci Ctr Houston, Dept Neurol, McGovern Med Sch, Houston, TX 77030 USA
[4] Univ Arkansas Med Sci, Dept Internal Med, Winthrop P Rockefeller Canc Inst, Div Hematol Oncol, Little Rock, AR 72205 USA
[5] Univ Arkansas Med Sci, Dept Internal Med, Winthrop P Rockefeller Canc Inst, Div Palliat Care, Little Rock, AR 72205 USA
[6] Univ Arkansas Med Sci, Dept Otolaryngol, Winthrop P Rockefeller Canc Inst, Little Rock, AR 72205 USA