[1] Merck Res Labs, Clin Pharmacol, Rahway, NJ 07065 USA
[2] Simon Williamson Clin, Birmingham, AL USA
[3] Ochsner Med Ctr, New Orleans, LA USA
[4] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA
[5] St Elizabeths Med Ctr, Boston, MA USA
[6] Capital Comprehens Canc Care Clin, Jefferson City, MO USA
[7] Roswell Pk Canc Inst, Buffalo, NY 14263 USA
[8] Salem Res Grp, Winston Salem, NC USA
[9] Res Med Ctr, Kansas City, MO USA
[10] Fletcher Allen Hlth Ctr, Burlington, VT USA