Background & Aims: Accurate knowledge about gestational age is very important in taking decision for pregnancy management and termination. According to Naegele’s rule the length of pregnancy is 280 days after LMP and according to studies performed in Harvard University, duration of pregnancy in nullipare and multipare women has been respectively 288 and 283 days and according to a study perform...

objectives: freezing and in vitro culture of testicular spermatozoa or tissue are reliable approaches for the management of azoospermic patients and could all for the possibility of multiple ivf-icsi procedures. however, the effect of cryopreservation duration on pregnancy outcome had been not fully examined. to analyze pregnancy outcome in patients underwent icsi procedure in relation to durat...

PURPOSE To describe methods reported in the literature to estimate the beginning or duration of pregnancy in automated health care data, and to present results of validation exercises where available. METHODS Papers reporting methods for determining the beginning or duration of pregnancy were identified based on Pubmed searches, by consulting investigators with expertise in the field and by r...