Shahidifar, S., Sharifnia, H., Taghipoor, B., Hekmat Afshar, M., Motevalli, R., khalili, Y., & Mazraie, F. "Association between seasonal patterns and preeclampsia", The Iranian Journal of Obstetrics, Gynecology and Infertility, 17, 125, 2014, 8-14. doi: 10.22038/ijogi.2014.3699