[1] US Oncol Res, Tyler, TX USA
[2] Florida Canc Specialists, Tavares, FL USA
[3] Northwest Georgia Oncol Ctr, Marietta, GA USA
[4] Texas Oncol, Wichita Falls, TX USA
[5] Outcomes Insights Inc, Westlake Village, CA USA
[6] Bristol Myers Squibb, Princeton, NJ USA
[7] Bristol Myers Squibb Co, Lawrenceville, NJ USA
[8] Univ Tennessee, Ctr Hlth Sci, Memphis, TN 38163 USA