3Kamin RA,Nowicki TA,Courtney DS,et al.Pearls and pitfalls in the emergency department evaluation of abdominal pain[J].Emerg Med Clin North Am,2003,21(1):61-72.
4Lyon C,Clark DC.Diagnosis of acute abdominal pain in older patients[J].Am Fam Physician,2006,74(9):1537-1544.
5Powers RD,Guertler AT.Abdominal pain in the ED:stability and change over 20 years[J].Am J Emerg Med,1995,13(3):301-303.