[1] Univ Rochester, Sch Med & Dent, Dept Anesthesiol, Dept Neurol, Rochester, NY 14627 USA
[2] Univ Washington, Seattle, WA 98195 USA
[3] St Louis Univ, St Louis, MO 63103 USA
[4] Univ Toronto, Inst Work & Hlth, Toronto, ON, Canada
[5] MD Anderson Canc Ctr, Houston, TX USA
[6] Univ Penn, Philadelphia, PA 19104 USA
[7] Johns Hopkins Univ, Baltimore, MD USA
[8] Yale Univ, VA Connecticut Hlthcare Syst, New Haven, CT 06520 USA
[9] NIAMSD, Bethesda, MD USA
[10] Pfizer Inc, New York, NY USA
[11] US FDA, Rockville, MD USA
[12] Northwestern Univ, Evanston Nothwestern Hlthcare, Evanston, IL 60208 USA
[13] Merck & Co Inc, Blue Bell, PA USA
[14] Amer Chron Pain Assoc, Rocklin, CA USA
[15] Allergan Pharmaceut Inc, Irvine, CA USA
[16] NINR, Bethesda, MD USA
[17] Univ Toronto, Univ Hlth Network, Toronto, ON, Canada
[18] Analgesic Res, Needham, MA USA
[19] Univ Copenhagen, Rigshosp, DK-1168 Copenhagen, Denmark
[20] Purdue Pharma, Stamford, CT USA
[21] Celgene Corp, Warren, NJ USA
[22] McCormick Consultat, Bethesda, MD USA
[23] Univ Rochester, Rochester, NY 14627 USA
[24] Univ Oxford, Oxford OX1 2JD, England
[25] Elan Pharmaceut Inc, San Diego, CA USA
[26] NINDS, Bethesda, MD USA
[27] GlaxoSmithKline, Res Triangle Pk, NC USA
[28] Johnson & Johnson, Raritan, NJ USA
[29] United Biosource Corp, Hlth Care Anal Grp, Bethesda, MD USA
[30] Duke Univ, Med Ctr, VA Med ctr, GRECC, Durham, NC USA
[31] Oregon Hlth & Sci Univ, Portland, OR 97201 USA
[32] Alpharma, Elizabeth, NJ USA
[33] Tercica, Brisbane, CA USA
[34] Endo Pharmaceut Inc, Chadds Ford, PA USA
[35] AstraZeneca, Sodertalje, Sweden