title: Update on prevalence of minor aphtha and the involved factors in tabriz, northwest iran.
authors.affiliation: Assistant professor, Department of Oral Pathology, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran.
authors.forename: Mahmood
authors.initials: M
authors.lastname: Sina
authors.forename: Mahmood
authors.initials: M
authors.lastname: Toorchi
authors.forename: Sina
authors.initials: S
authors.lastname: Ghertasi Oskouei