PT - JOURNAL ARTICLE ED - , TI - Prison optics DP - 2002 Nov 12 TA - Canadian Medical Association Journal PG - 1093--1093 VI - 167 IP - 10 4099 - http://www.cmaj.ca/content/167/10/1093.short 4100 - http://www.cmaj.ca/content/167/10/1093.full SO - CMAJ2002 Nov 12; 167