Le Moine JG, Fiestas Navarrete L, Katumba K, Launois R. Psychometric validation of the 14 items chronic venous insufficiency quality of life questionnaire (CIVIQ-14): confirmatory factor analysis. Eur J Vasc Endovasc Surg. 2016 Feb;51(2):268-74. doi: 10.1016/j.ejvs.2015.08.020.
Seeger JD, Quinn S, Earnest DL, Lembo A, Kuo B, Rivero E. The zelnorm epidemiologic study (ZEST): a cohort study evaluating incidence of abdominal and pelvic surgery related to tegaserod treatment. BMC Gastroenterol. 2012 Dec;12(1):171.
Mitra D, Hodgkins P, Yen L, Davis KL, Cohen RD. Association between oral 5-ASA adherence and health care utilization and costs among patients with active ulcerative colitis. BMC Gastroenterol. 2012 Sep 1;12(Sept):132.
Smith VK, Evans MF, Banzhaf HS, Poulos C. Can weak substitution be rehabilitated? Environ Resour Econ (Dordr). 2010 Feb 1;45(2):203-21.
Cole JA, Rothman KJ, Cabral HJ, Zhang Y, Farraye FA. Migraine, fibromyalgia, and depression among people with IBS: a prevalence study. BMC Gastroenterol. 2006 Sep 1;6(26).
Mansfield CA. Despairing over disparities: an empirical analysis of the relationship between willingness-to-pay and willingness-to-accept. Environ Resour Econ (Dordr). 1999;13(2):219-34.