Caro SD, Tao H, Grillo A, Franceschi F, Elia C, Zocco MA, Gasbarrini G, Sepulveda AR, Gasbarrini A. Bacillus clausii effect on gene expression pattern in small bowel mucosa using DNA microarray analysis. European Journal of Gastroenterology & Hepatology. 2005 Sep;17(9):951–60. doi: 10.1097/00042737-200509000-00011.