1. Cervellin G, Mora R, Ticinesi A, Meschi T, Comelli I, CPatena F, et al. Epidemiology and outcomes of acute abdominal pain in a large urban Emergency Department: retrospective analysis of 5,340 cases. Annals of translational medicine. 2016; 4(19): 362.
2. Evaluation of Focused Assessment with Sonography in Trauma Diagnostic Function in Determination of Intra-Abdominal Free Fluid due to Blunt Trauma in Patients Referring to Shahid Beheshti Hospital in Qom, during 2014-2017. Zanko Journal of Medical Sciences. 10-1: (64) 20; 2019.
3. Shah S. An update on common gastrointestinal emergencies. Emergency Medicine Clinics. 2013; 31(3): 775-93.
4. Cartwright SL, Knudson MP. Evaluation of acute abdominal pain in adults. American family physician. 2008; 77(7).
5. Kachoie a ,hoseini s, Biderafsh A, kamalian i, madani s, noori e. Comparison of the accuracy of acute appendicitis diagnosis in appendectomies patients at Shahid Beheshti Hospital in Qom with global standards. Journal of Sabzevar University of Medical Sciences. 20. 7-692: (5) 27; 20.
6. De Simone B, Ansaloni L, Sartelli M, Coccolini F, Paolillo C, Valentino M, et al. The Acute Abdomen Decision Making course for the initial management of non traumatic acute abdomen: A proposition of the World Society of Emergency Surgeons. Emergency Care Journal. 2019; 15(1).
7. Smith S, Schreiber MA. Evaluating the Acute Abdomen. Emergency General Surgery: Springer; 2019. p. 13-26.
8. Hughes T. Opiates in acute abdominal pain. British medical journal. 1979; 2(6198): 1145.
9. Silen W, Cope Z. Cope's early diagnosis of the acute abdomen: Oxford University Press, USA; 2005.
10. Pace S, Burke TE. Intravenous morphine for
early pain relief in patients with acute abdominal pain. Academic Emergency Medicine. 1996; 3(12): 1086-92.
11. Green R, Bulloch B, Kabani A, Hancock BJ, Tenenbein M. Early analgesia for children with acute abdominal pain. Pediatrics. 2005; 116(4): 978-83.
12. Beauchamp JC, Giordano J. What Is the Accuracy of the Physical Exam in Intra-abdominal Emergencies? Does Administration of Pain Medication Alter the Accuracy of the Physical Examination? Gastrointestinal Emergencies: Springer; 2019. p. 7-9.
13. Amoli H, Golozar A, Keshavarzi S, Tavakoli H, Yaghoobi A. Morphine analgesia in patients with acute appendicitis: a randomised double-blind
clinical trial. Emergency Medicine Journal. 2008; 25(9): 586-9.
14. MACKWAY-JONES, Kevin; HARRISON, Magnus. Analgesia and assessment of abdominal pain. Journal of Accident & Emergency Medicine, 2000, 17.2: 128.
15. Thomas S, Silen W. Effect on diagnostic efficiency of analgesia for undifferentiated abdominal pain. Journal of British Surgery. 2003; 90(1): 5-9.
16. Gallagher EJ, Esses D, Lee C, Lahn M, Bijur PE. Randomized clinical trial of morphine in acute abdominal pain. Annals of emergency medicine. 2006; 48(2): 150-60. e4.
