This revised edition of the landmark text includes the latest tests and treatments for those who are experiencing unexplained IVF failure, recurrent miscarriage, or long term infertility. An over activated immune response to pregnancy and blood clotting problems are now being identified in women with these previously unexplained conditions. Over 90% of fertility centers worldwide are now incorporating reproductive immunology into their treatment protocol, seeing success rates of more than 85% within three natural or IVF cycles. A fully updated list of all these centers is provided in this book, making this a vital resource for all couples considering fertility treatment and looking for the best options in their state. Immune friendly fertility centers in other countries are also included.