surgeon is a physician who performs surgical operations. There are also surgeons in podiatry, dentistry and the veterinary fields. The first person to document a surgery was the 6th Century BC Indian physician-surgeon, Sushruta. He specialised in cosmetic plastic surgery and had documented even an operation of open rhinoplasty. His magnum opus Suśruta-saṃhitā is one of the most important surviving ancient treatises on medicine and is considered a foundational text of Ayurveda and surgery. The treatise addresses all aspects of general medicine, but the translator G. D. Singhal dubbed Suśruta "the father of surgical intervention" on account of the extraordinarily accurate and detailed accounts of surgery to be found in the work. After the eventual decline of the Sushruta School of Medicine in India, surgery had been largely ignored until the Islamic Golden Age surgeon Al-Zahrawi (936-1013), reestablished surgery as an effective medical practice. He is considered the greatest medieval surgeon to have appeared from the Islamic World, and has been described as the father of surgery.His greatest contribution to medicine is the Kitab al-Tasrif, a thirty-volume encyclopedia of medical practices.He was the first physician to describe an ectopic pregnancy, and the first physician to identify the hereditary nature of hæmophilia.