1. The gastrointestinal biopsy as a diagnostic aid;Ross;Amer. J. Gastroent.,1965
2. The contribution of peroral mucosal biopsy to the diagnosis of gastrointestinal diseases;O’Droscoll;J. Mich. Med. Soc.,1961
3. Simple gastrointestinal biopsy capsule;Carey;Gastroenterology,1964
4. Small bowel biopsy— a review;Sommerville;Arizona Med.,1964
5. Peroral biopsy of the small intestine;Rubin;Gastroenterology,1965