Sir, We thank Benaglia et al. (2009) for their interesting study. In contrast to Nakagawa et al. (2008), they found that spontaneous ovulation is impaired in ovaries affected by endometriotic cysts. The same group previously observed hypo-responsiveness of the affected ovaries to gonadotrophin-induced controlled ovarian hyperstimulation (COH) (Somigliana et al., 2006a, b). In all studies, ovula...
