Primary ovarian insufficiency(POI) occurs in about 1% of female population under the age of 40,leading to reproductive problems,an earlier encounter with menopa
Agricultural non-point source pollution has become the main part of water pollution prevention and control in China. This paper made a brief introduction to the
This is a retrospective,observational study to evaluate the effect of maternal age on the outcomes of in vitro fertilization and embryo transfer(IVF-ET).11830 I