PT - JOURNAL ARTICLE ED - , TI - Gene mutation may explain multiple-birth pregnancies DP - 2001 Jan 09 TA - Canadian Medical Association Journal PG - 82--82-a VI - 164 IP - 1 4099 - http://www.cmaj.ca/content/164/1/82.2.short 4100 - http://www.cmaj.ca/content/164/1/82.2.full SO - CMAJ2001 Jan 09; 164