1. Wilson, 2011 ultrasound of inflammatory bowel disease. .
2. Path physiology of inflammatory bowel disease;Thoreson;Surg Clin North Am,2007
3. Collagenous colitis and lymphocytic colitis;Tremaine;J Clin Gastroenterol,2000
4. Transabdominal ultrasound in inflammatory bowel disease conventional and recently developed techniques – update;Allgyer;Med Ultrasonogr,2011
5. Sonography of the small intestine;Nylund;World J Gastroenterol,2009