?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Yu&rft.aufirst=CK&rft.au=Yu%2C+CK&rft.atitle=Endothelial+nitric+oxide+synthase+gene+polymorphism+(Glu298Asp)+and+development+of+pre-eclampsia%3A+a+case-control+study+and+a+meta-analysis.&rft.volume=6&rft.date=16+March+2006&rft.pages=-&rft.title=BMC+Pregnancy+and+Childbirth&rft.genre=article