Keller, San PhD*; Bann, Carla M. PhD†; Dodd, Sheri L. MSc‡; Schein, Jeff DrPH, MPH‡; Mendoza, Tito R. PhD§; Cleeland, Charles S. PhD§
From the *American Institutes for Research, Chapel Hill, NC; †RTI International, Research Triangle Park, NC; ‡Janssen Pharmaceutica, Inc., Titusville, NJ; and §M. D. Anderson Pain Research Group, Houston, TX.
This work was supported by a contract with Janssen Pharmaceutica, Inc.
Reprints: San Keller, PhD, American Institutes for Research, 1501 E. Franklin Street, Suite 200, Chapel Hill, NC 27514-2825 (e-mail: [email protected]).
Received for publication June 9, 2002; revised January 11, 2003; second revision March 15, 2003; accepted March 17, 2003.