<prompt> Which of the following is not a cause for Acute pancreatitis?Gall stonesHemochromatosisAlcohol intakeAnti retroviral drug  <response>: Common causes of acute pancreatitis are gallstones, alcohol, ERCP, trauma, post surgery, dysfunction of sphincter of Oddi and by drugs such as antiretroviral drugs, azathioprine, tetracycline, valproic acid, 6 mercaptopurine, sulfonamides and estrogen. Hemochromatosis is not a cause of acute pancreatitis. Reference: Harrisons Principles of Internal Medicine 18e, chapter 313. 