start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=4 article-no= start-page=123 end-page=124 dt-received= dt-revised= dt-accepted= dt-pub-year=2018 dt-pub=20180915 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Long-term Trends in Prevalence of Neural Tube Defects in Japan en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=YorifujiTakashi en-aut-sei=Yorifuji en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil=Department of Human Ecology, Graduate School of Environmental and Life Science, Okayama University kn-affil= en-keyword=dietary supplements kn-keyword=dietary supplements en-keyword= folic acid kn-keyword= folic acid en-keyword=fortification of the food supply kn-keyword=fortification of the food supply en-keyword=long-term trend kn-keyword=long-term trend en-keyword=neural tube defects kn-keyword=neural tube defects en-keyword=spina bifida kn-keyword=spina bifida END