Regional and racial variations in the utilization of endoscopic retrograde cholangiopancreatography among pancreatic cancer patients in the United States

Anna Tavakkoli, Amit G. Singal, Akbar K. Waljee, James M. Scheiman, Caitlin C. Murphy, Sandi L. Pruitt, Lei Xuan, Richard S. Kwon, Ryan J. Law, Grace H. Elta, Phyllis Wright-Slaughter, Thomas S. Valley, Nisa Kubiliun, Hari Nathan, Joel H. Rubenstein, B. Joseph Elmunzer