[1] Mayo Clin, Coll Med, Rochester, MN USA
[2] Illinois Oncol Res Assoc, Peoria, IL USA
[3] Med Oncol & Hematol Associates, Des Moines, IA USA
[4] Witchita CCOP, Wichita, KS USA
[5] Duluth Clin, Duluth, MN USA
[6] Siouxland Reg Canc Ctr, Sioux City, IA USA
[7] Mayo Clin Scottsdale, Scottsdale, AZ USA