{Reference Type}: Case Reports
{Title}: A Rare Cause of Elevated Serum CA19-9.
{Author}: Chou JW;Chang KP;Wu YH;
{Journal}: Gastroenterology
{Volume}: 160
{Issue}: 1
{Year}: 01 2021
{Factor}: 33.883
{DOI}: 10.1053/j.gastro.2020.08.031
{Abstract}: