1. Comments on a case of the association of gastric neoplasm and duodenal ulcer;Alcala-Santaella;Revista Clinica Espanola,1960
2. Concomitant gastric and duodenal ulcers;Bateson;British Journal of Radiology,1969
3. The association of gastric cancer with duodenal ulcer;Burns;British Journal of Surgery,1967
4. The strange relationship between cancer of the stomach and duodenal ulcer;Carney;Journal of Abdominal Surgery,1961
5. Co-existence of duodenal ulcer with independent gastric carcinoma;Epstein;Gastroenterology,1950