1. Endodontology—epidemiologic considerations;Eriksen;Endod Dent Traumatol,1991
2. Management of periapical lesions in endodontically treated teeth;Reit;Swed Dent J,1984
3. Endodontic status and suggested treatment in a population requiring substantial dental care;Peterson;Endod Dent Traumatol,1989
4. Prescribing endodontic retreatment: towards of theory of dentist behaviour;Kvist;Int Endod J,1994
5. Treatment outcome of surgical and nonsurgical management of endodontic failures;Hepworth;J Can Dent Assoc,1997