?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Liu&rft.au=Liu%2C+J&rft.aufirst=J&rft.issue=42&rft.issn=1949-2553&rft.pages=72577-72583&rft.title=Oncotarget&rft.date=22+September+2017&rft.atitle=The+recurrence+risk+of+neural+tube+defects+(NTDs)+in+a+population+with+high+prevalence+of+NTDs+in+northern+China&rft.volume=8&rft.genre=article