References
- Silen W. Cope's early diagnosis of the acute abdomen. 19th ed. New York: Oxford University Press, 1996
- Moustafa MH, Newton E. Does this patient have appendicitis? (Letter) JAMA 1997; 277(8): 625; discussion 626–7
- Markle GB 4th. A simple test for intraperitoneal inflammation. Am J Surg 1973; 125(6): 721–2
- Thomson H, Francis DM. Abdominalwall tenderness: a useful sign in the acute abdomen. Lancet 1977; 2(8047): 1053–4
- Hershfield NB. The abdominal wall: a frequently overlooked source of abdominal pain. J Clin Gastroenterol 1992; 14(3): 199–202
- Bennett DH, Tambeur LJ, Campbell WB. Use of coughing test to diagnose peritonitis. BMJ 1994; 308(6940): 1336
- Gray DW, Dixon JM, Collin J. The closed eyes sign: an aid to diagnosing nonspecific abdominal pain. BMJ 1988; 297(6652): 837