Women older than 40 years of age and those with elevated FSH hormone levels differ in poor response rate and embryo quality in in-vitro fertilization - Van Rooij,I.J.; Bancsi,L.F.; Broekmans,F.J.; Looman,C.W.; Habbema,J.D.; teVelde,E.R. (Fertil Steril, 2003)