A core reference for residents and practitioners for over 35 years, Danforth's Obstetrics and Gynecology is now in its thoroughly revised Ninth Edition. To ensure complete, authoritative coverage of recent changes in obstetrics and gynecology, Dr. Scott has selected three distinguished new co-editors: Ronald S. Gibbs, MD, a specialist in maternal-fetal medicine and infectious diseases; Beth Karlan, MD, a gynecologic oncologist; and Arthur Haney, MD, a reproductive endocrinologist. Content has been reorganized to focus on the modern clinical practice of obstetrics and gynecology with maximum authority. This edition has more tables and algorithms that will speed access to critical information.