21. There are many models of duodenal ulcer - do we need a new one? 22. ...duodenal ulcers. 23. Six patients had gastric ulcers and five had duodenal ulcers. |
21. There are many models of duodenal ulcer - do we need a new one? 22. ...duodenal ulcers. 23. Six patients had gastric ulcers and five had duodenal ulcers. |