PT - JOURNAL ARTICLE AU - F. C. Fraser AU - A. Lippman TI - Preventing neural tube defects: ethics of clinical trials DP - 1984 May 01 TA - Canadian Medical Association Journal PG - 1113--1114 VI - 130 IP - 9 4099 - http://www.cmaj.ca/content/130/9/1113.short 4100 - http://www.cmaj.ca/content/130/9/1113.full SO - CMAJ1984 May 01; 130