?url_ver=Z39.88-2004&rft_id=MTMT%3A31310866+10.1007%2Fs00404-020-05448-y&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=M%C3%A1rton&rft.au=+M%C3%A1rton+Vir%C3%A1g&rft.aufirst=Vir%C3%A1g&rft.title=ARCHIVES+OF+GYNECOLOGY+AND+OBSTETRICS&rft.date=2020&rft.volume=301&rft.issn=0932-0067&rft.pages=491-498&rft.atitle=Associated+perinatal+determinants+of+vanishing+twin+pregnancies+achieved+by+in+vitro+fertilization+vs.+spontaneous+conception&rft.issue=2&rft.genre=article