Influence of Paternal Age on Assisted Reproduction Outcome

we will retrospectively assess our databases in our clinic, instituto valenciano de infertilidad in valencia (spain), searching for assisted reproduction procedures, iui standard ivf/icsi cycles and ovum donation ivf/icsi cycles, who were referred to our unit to cryopreserve sperm during the period, from january 2000 to december 2006, male age, assisted reproduction, sperm, pregnancy outcome, observational