Association of provisional driver licensing intervention by police with changes in incidence and severity of road traffic injuries in Iran oleh Ali Nasermoadeli, Hamid Soori, Elahe Ainy, Mohammad Movahedi, Mohammad Reza Mehmandar, Saad Mahfozphoor, Mohammad Reza Masoodeinejad, Hamid Reza Hatamabadi, Mansoor Rezazadeh Azari, Reza Vafaee