Ervin CM, Mangel AW. Clinical trials in irritable bowel syndrome: a review. Rev Recent Clin Trials. 2013 Mar 1;8(1):9-22.
Carrera G, Garcia-Albeniz X, Ayuso JR, Aparicio J, Castells A, Codony-Servat J, Feliu J, Fuster D, Gallego R, Pages M, Torres F, Maurel J. Design and endpoints of clinical and translational trials in advanced colorectal cancer. a proposal from GROUP Español Multidisciplinar en Cancer Digestivo (GEMCAD). Rev Recent Clin Trials. 2011 May;6(2):158-70. doi: 10.2174/157488711795177868
Chatzi L, Plana E, Pappas A, Alegkakis D, Karakosta P, Daraki V. The metabolic syndrome in early pregnancy and risk of gestational diabetes mellitus. Diabetes Metab. 2009 Dec;35(6):490-4.
Cole JA, Rothman KJ, Cabral HJ, Zhang Y, Farraye FA. Incidence of IBS in a cohort of people with asthma. Dig Dis Sci. 2007 Feb 28;52(2):329-35.