1. World Health Organization. Declaration of Alma-Ata. International Conference on Primary Health Care, Alma-Ata, USSR, 1978.
2. Apical periodontitis: a very prevalent problem;Figdor;Oral Surg Oral Med Oral Pathol Oral Radiol Endod,2002
3. A survey of dentists' preferences for the treatment of teeth with apical periodontitis;Azarpazhooh;J Endod,2013
4. A survey of patients' preferences for the treatment of teeth with apical periodontitis;Azarpazhooh;J Endod,2013
5. Dental insurance, income and the use of dental care in Canada;Bhatti;J Can Dent Assoc,2007