PT - JOURNAL ARTICLE AU - Ayiomamitis, A. TI - Birth prevalence and recurrence rates of neural tube defects in southern Alberta in 1970-81 DP - 1988 Oct 01 TA - Canadian Medical Association Journal PG - 610a--611 VI - 139 IP - 7 4099 - http://www.cmaj.ca/content/139/7/610a.short 4100 - http://www.cmaj.ca/content/139/7/610a.full SO - CMAJ1988 Oct 01; 139