Shahbazzadeh, F., Narimani, S., Ahmadi, S., & Anvari, Z. (2020). Factors affecting the use of helmets among motorcyclists in Ardabil city 2019. Irtiqa Imini Pishgiri Masdumiyat (Safety Promotion and Injury Prevention), 7(3), 137–131. https://doi.org/10.22037/meipm.v7i3.29937