Haglund, Ulf, M.D (2001). "Mesenteric ischemia". National Center for Biotechnology Information, U.S. National Library of Medicine. W. Zuckschwerdt Verlag GmbH. Retrieved June 13, 2021.{{cite web}}: CS1 maint: multiple names: authors list (link)
worldcat.org
Manterola, Carlos; Vial, Manuel; Moraga, Javier; Astudillo, Paula (2011-01-19). "Analgesia in patients with acute abdominal pain". Cochrane Database of Systematic Reviews (1): CD005660. doi:10.1002/14651858.cd005660.pub3. ISSN1465-1858. PMID21249672.