36. American Hospital Association. Hospital Statistics. Chicago. 1999. See also: Thomas, Eric J.; Studdert, David M.; Burstin, Helen R., et al. Incidence and Types of Adverse Events and Negligent Care in Utah and Colorado. Med Care forthcoming March 2000. See also: Thomas, Eric J.; Studdert, David M.; Newhouse, Joseph P., et al. Costs of Medical Injuries in Utah and Colorado. Inquiry. 36:255–264, 1999.