1. Pancreatic heterotopia;Barbosa;Surg Gynec Obstet,1946
2. Aberrant pancreatic tissue in the gastro-intestinal tract;Brauch;A report of 24 cases. Arch Surg,1935
3. Epithelial glycoproteins of human gallbladder: immunological characterization;Häkkinen;Arch Path,1970
4. Pancreatic tissue in the wall of the stomach;King;Arch Surg,1934
5. Goblet cells, enterochromaffin cells, superficial gastric-type epithelium and antral-type glands in the gallbladder;Laitio;Beitr Path,1975