Randomised controlled trial to establish the clinical and cost-effectiveness of expectant management versus preoperative imaging with magnetic resonance cholangiopancreatography in... oleh Chris Rogers, Lucy Culliford, Natalie S Blencowe, William Hollingworth, Kerry Avery, Marcus Jepson, Joanna Thorn, Raneem Albazaz, Barnaby Reeves, Madeleine Clout, Ravi Vohra, Samir Pathak, Ian Beckingham, Ashley Guthrie, Ewen A Griffiths, Giles Toogood, Michelle Lazaroo, Neil Jennings, Jane Collingwood, Elizabeth Booth