1. Colitis in the elderly. A reappraisal;Brandt;Am J Gastroenterol,1981
2. Mesenteric ischemia in the elderly;Ruotolo;Clin Geriatr Med,1999
3. Intestinal ischemic disorders;Levine;Dig Dis,1995
4. Acute mesenteric ischaemia;Inderbitzi;Eur J Surg,1992
5. Acute intestinal ischaemia. A review of 214 cases;Vinen;Ann Chir Gynaecol,1994