<prompt> Gold standard investigation for chronic pancreatitisMRIERCPPancreatic function testsFaecal fat estimation  <response>: ERCPEndoscopic retrograde cholangiopancreatography is the most accurate way of elucidating the anatomy of duct and, in conjunction with the whole organ morphology, can help to determine the type of operation required. Reference : Bailey Love, 27th Edition, page no 1231 