PT - JOURNAL ARTICLE AU - Roger Collier TI - Different routes to regionalization AID - 10.1503/cmaj.109-3166 DP - 2010 Mar 09 TA - Canadian Medical Association Journal PG - 330--331 VI - 182 IP - 4 4099 - http://www.cmaj.ca/content/182/4/330.short 4100 - http://www.cmaj.ca/content/182/4/330.full SO - CMAJ2010 Mar 09; 182