Comprehensive and up-to-date source on multiple pregnancy. It discusses cutting-edge options and technologies, and covers subjects not mentioned in other monographs on twins. Specifically, it describes the vanishing twin and its causes, congenital defects, selective reduction procedures, the use of ultrasound, and the twin-to-twin transfusion syndrome. Additionally, it provides an extensive discussion of epidemiology, which makes use of governmental data sources from the USA and Europe. An important section on the childhood growth and development of twins is also included. Finally, thorough consideration is given to parental needs both in the antepartum and the postpartum periods. The volume concludes with a special section on support organizations.