Original Article
The prevalence and risk factors of attention deficit hyperactivity disorder among the elementary school students in Ardabil, Iran, in 2011-2012
Moslem Abolhassanzadeh 1, Ali Reza Shafiee-Kandjani 2 * , Zahra Vaziri 3, Parviz Molavi 4, Fariba Sadeghi-movahhed 5, Gholamreza Noorazar 2, Sajjad Basharpoor 6