Symbion, Inc., through its subsidiaries, owns and operates short stay surgical facilities, which include ambulatory surgery centers and surgical hospitals in the United States. The company provides non-emergency surgical procedures, including orthopedic, gynecology, general surgery, ear, nose and throat, pain management, gastrointestinal, plastic surgery, and ophthalmology. It also offers management and administrative services on a contract basis to surgery centers. The company’s hospitals also provide diagnostic imaging, pharmacy, laboratory, and obstetrical services. As of March 10, 2007, it owned and operated 50 surgical facilities, including 47 ambulatory surgery centers and 3...