[1] Johns Hopkins Bloomberg Sch Publ Hlth, Mol Microbiol & Immunol, Baltimore, MD 21205 USA
[2] Stanford Univ, Hist Sci, Stanford, CA 94305 USA
[3] Stanford Univ, Sch Med, Stanford, CA 94305 USA
[4] Univ Calif Irvine, Neurobiol & Behav, Irvine, CA 92697 USA
[5] Univ Toronto, Hosp Sick Children, Genet & Genome Biol, Toronto, ON M5G 1X8, Canada
[6] Georgia State Univ, Neurosci Inst, Atlanta, GA 30302 USA
[7] Northwestern Univ, Womens Hlth Res Inst, Feinberg Sch Med, Chicago, IL 60611 USA
[8] Univ Maryland, Sch Med, Dept Pharmacol, Baltimore, MD 21201 USA
[9] McGill Univ, Psychol, Montreal, PQ H3A 1B1, Canada
[10] McGill Univ, Alan Edwards Ctr Res Pain, Montreal, PQ H3A 1B1, Canada
[11] Univ Calif Berkeley, Psychol & Integrat Biol, Berkeley, CA 94720 USA