In fact, the biggest danger of all current plastic surgery lies not in transplantation, but in anaesthesia. Ephraim Clinic emphasizes that many plastic surgery simplifies the important procedure of anaesthesia because of its convenience, and does not ask a professional anaesthetist to deal with the disease. It is quite dangerous for patients. What is the point of this passage? ['Many plastic surgeries are convenient and simplify the important procedure of anesthesia.', 'The biggest danger of plastic surgery is not anesthesia.', 'Anesthesia is likely to bring danger to plastic surgery.', 'The biggest danger in plastic surgery is anesthesia.']