PT - JOURNAL ARTICLE AU - Hébert, Paul C. TI - Progressive licensing needs progressive open debate AID - 10.1503/cmaj.070703 DP - 2007 Jun 19 TA - Canadian Medical Association Journal PG - 1801--1801 VI - 176 IP - 13 4099 - http://www.cmaj.ca/content/176/13/1801.short 4100 - http://www.cmaj.ca/content/176/13/1801.full SO - CMAJ2007 Jun 19; 176