PT - JOURNAL ARTICLE ED - , TI - Intrinsic Pain Control AID - 10.1126/science.302.5642.13l DP - 2003 Oct 03 TA - Science PG - 13--13 VI - 302 IP - 5642 4099 - http://science.sciencemag.org/content/302/5642/13.12.short 4100 - http://science.sciencemag.org/content/302/5642/13.12.full SO - Science2003 Oct 03; 302