The Recent Advances in Obstetrics and Gynecology is in an ongoing series, which aims at helping postgraduates updating themselves with the latest technologies and treatment updates which may not be covered in their postgraduate teaching. It is aimed for residents doing their postgraduation. This book involves a collection of focused articles from renowned teachers and authors from all over the country who bring their years of expertise and experience to you. Postgraduate students receive a very short study leave prior to their final examinations. Through this book we wish to reduce your time to scour for updated guidelines, research papers, and evidence on topics of thematic interest. The authors address this paucity with this textbook series, which aims to unite senior, respected, and stalwart postgraduate teachers from all over India who have been mentors and guides to generations of students.