Impact of a health educational interventional program on reducing the head lice infestation among pupils in an elementary school of a sub-tropical region: a quasi-experimental stud... oleh Mohsen Najjari, Mohammad Amin Gorouhi, Hossein Zarrinfar, Bibi Razieh Hosseini Farash, Jamshid Jamali, Elham Moghaddas, Mohammad Ebrahimipuor