Book excerpt: Assisted reproductive technology (ART) is available to two-thirds of the world's population, and world-class experts, representing research from 18 different countries, have contributed to this groundbreaking textbook, detailing the techniques and philosophies behind medical procedures of infertility and assisted reproduction. This is one of the most rapidly changing and hotly debated fields in medicine. Different countries have different restrictions on the research techniques that can be applied to this field, and, therefore, experts from around the world bring varied and unique authorities to different subjects in reproductive technology. Encompassing the latest research into the physiology of reproduction, infertility evaluation and treatment, and assisted reproduction, it concludes with perspectives on the ethical dilemmas faced by clinicians and professionals. This book will be the definitive resource for those working in the areas of reproductive medicine world wide.