Effect of a prior-authorization requirement on the use of nonsteroidal antiinflammatory drugs by Medicaid patients. Smalley WE, Griffin MR, Fought RL, Sullivan L, Ray WA (1995) N Engl J Med 332: 1612-7 The burden of gastrointestinal and liver diseases, 2006. Shaheen NJ, Hansen RA, Morgan DR, Gangarosa LM, Ringel Y, Thiny MT, Russo MW, Sandler RS (2006) Am J Gastroenterol 101: 2128-38 Indirect, out-of-pocket and medical costs from influenza-related illness in young children. Ortega-Sanchez IR, Molinari NA, Fairbrother G, Szilagyi PG, Edwards KM, Griffin MR, Cassedy A, Poehling KA, Bridges C, Staat MA (2012) Vaccine 30: 4175-81 Interstate variation in elderly Medicaid nursing home populations. Comparisons of resident characteristics and medical care utilization. Ray WA, Federspiel CF, Baugh DK, Dodds S (1987) Med Care 25: 738-52 Trends in treatment costs for localized prostate cancer: the healthy screenee effect. Zeliadt SB, Etzioni R, Ramsey SD, Penson DF, Potosky AL (2007) Med Care 45: 154-9
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