Debanjali M, Hodgkins P, Yen L, Solomon D, Davis KL, Cohen R. Adherence with oral 5-aminosalicylic acid therapy in patients with ulcerative colitis: impact on all-cause healthcare costs. Inflamm Bowel Dis. 2009 Dec 1;15(12):S32.
Williams GC, Patrick H, Niemiec CP, Williams LK, Divine G, Lafata JE, Heisler M, Tunceli K, Pladevall-Vila M. Reducing the health risks of diabetes: how self-determination theory may help improve medication adherence and quality of life. Diabetes Educ. 2009 Mar 26;35(3):484-92.