Lack of seasonal variations in fertilization, pregnancy and implantation rates in women undergoing IVF.

@article{Wunder2005LackOS,
  title={Lack of seasonal variations in fertilization, pregnancy and implantation rates in women undergoing IVF.},
  author={Dorothea M. Wunder and Costanzo Limoni and Martin H. Birkhaeuser},
  journal={Human reproduction},
  year={2005},
  volume={20 11},
  pages={3122-9}
}
BACKGROUND Several studies have investigated seasonal variations during IVF. Their results are contradictory, especially concerning fertilization and pregnancy rates. The aim of the present study was to re-evaluate these parameters using a large number of IVF cycles. METHODS A total of 7368 IVF cycles conducted in Switzerland between 1995 and 2003 were retrospectively analysed. To avoid a bias in the evaluation of the fertilization rate, only IVF cycles without ICSI were considered for… CONTINUE READING