[1] NIDR, NEUROBIOL & ANESTHESIOL BRANCH, BETHESDA, MD 20892 USA
[2] KAISER SUNNYSIDE MED CTR, DEPT NURSING, CLACKAMAS, OR USA
[3] UNIV CALIF SAN FRANCISCO, DEPT PHYSIOL NURSING, SAN FRANCISCO, CA 94143 USA
[4] UNIV WISCONSIN, SCH NURSING, PAIN RES GRP, MADISON, NJ USA
[5] UNIV WISCONSIN, CTR COMPREHENS CARE, MADISON, NJ USA
[6] UNIV WISCONSIN, DEPT NURSING, MADISON, NJ USA
[7] MEM SLOAN KETTERING CANC CTR, DEPT NURSING, NEW YORK, NY 10021 USA
[8] UNIV WISCONSIN, DEPT NEUROL, PAIN RES GRP, MADISON, WI 53706 USA
[9] MEM SLOAN KETTERING CANC CTR, DEPT NEUROL, NEW YORK, NY 10021 USA
[10] MEM SLOAN KETTERING CANC CTR, DEPT EPIDEMIOL & BIOSTAT, NEW YORK, NY 10021 USA
[11] UNIV TEXAS, MD ANDERSON CANC CTR, DEPT RADIOTHERAPY, HOUSTON, TX USA
[12] UNIV TEXAS, MD ANDERSON CANC CTR, DEPT NEUROONCOL, HOUSTON, TX USA
[13] UNIV WASHINGTON, HARBORVIEW MED CTR, DEPT ANESTHESIOL, SEATTLE, WA 98104 USA
[14] AMER PAIN SOC, GLENVIEW, IL 60025 USA