Gastric heterotopia in the rectum.

@article{Yang2010GastricHI,
  title={Gastric heterotopia in the rectum.},
  author={Zhaohai Yang and Tommy Yates and Nirag C. Jhala},
  journal={Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association},
  year={2010},
  volume={8 1},
  pages={A24}
}