Farzan, M., Zerin, I., Kabir, M., Pavel, M. and Hossain, M. 2013. Health Education Intervention on Hand Washing in a selected Primary School Children. Bangladesh Journal of Dental Research & Education. 2, 1 (Jul. 2013), 7–11. DOI:https://doi.org/10.3329/bjdre.v2i1.15571.