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2. A note on the clinical value of bacteriological controlling the treatment of periapical infection;Appleton;Dental Cosmos,1932
3. Retreatment of endodontic treatment;Bergenholtz;Scandinavian Journal of Dental Research,1979
4. Influence of apical overinstrumentation and overfilling on re-treat root canals;Bergenholtz;Journal of Endodontics,1979
5. A statistical study of root-canal therapy;Buchbinder;The Dental Cosmos,1936