PT - JOURNAL ARTICLE AU - Michelle Porepa AU - Lee Benson AU - David E. Manson AU - Jeremy N. Friedman TI - True blue: a puzzling case of persistent cyanosis in a young child AID - 10.1503/cmaj.070109 DP - 2009 Mar 31 TA - Canadian Medical Association Journal PG - 734--737 VI - 180 IP - 7 4099 - http://www.cmaj.ca/content/180/7/734.short 4100 - http://www.cmaj.ca/content/180/7/734.full SO - CMAJ2009 Mar 31; 180