Now in its fourth volume, the Biennial Review of Infertility brings together the most up-to-date research and clinical information on male and female infertility, emerging assisted reproductive techniques and evolving controversies in reproductive medicine. An impressive panel of contributors presents cutting-edge information in a clear and well-balanced manner. Volume 4 discusses hot topics in contemporary reproductive medicine, including stem cell technologies for male infertility, the current state of ovarian tissue cryopreservation and time-lapse video microscopy of embryos. The expanded section on controversies allows for point/counterpoint discussion between experts with differing opinions on topics like eSET and the use and role of dietary supplements in IVF cycles. Created to provide an ongoing appraisal of current knowledge, the Biennial Review of Infertility stimulates communication amongst all clinicians and researchers working to help couples resolve their infertility.