Memorial Hermann-Texas Medical Center, founded in 1925, provides health care services in the areas of heart, neuroscience, orthopedics, women's health, general surgery and organ transplantation. It is also the primary teaching hospital for the University of Texas Medical School at Houston. The hospital provides 24-hour emergency and trauma care to more than 40,000 patients a year. Located in Houston, its Life Flight air ambulance service operates a fleet of helicopters, providing emergency rescue and air transport services to a multicounty area. The hospital s Heart & Vascular Institute performs robotic reconstructive aortic surgery, cardiac risk screening for women and offers preventive cardiology training program. Its Mischer Neuroscience Institute provides treatment and services for traumatic brain injury, advanced neurocritical care, neuroendoscopy and spinal cord injuries.