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- [4] DIET AS A FACTOR IN ETIOLOGY OF NEURAL-TUBE DEFECTS ZEITSCHRIFT FUR KINDERCHIRURGIE-SURGERY IN INFANCY AND CHILDHOOD, 1980, 31 (04): : 302 - 307
- [5] NEURAL-TUBE DEFECTS - IMPORTANCE OF A HISTORY OF ABORTION IN ETIOLOGY BRITISH MEDICAL JOURNAL, 1979, 1 (6169): : 975 - 976