1. Dr. A. I. Amouei is an assistant professor in the Department of Environmental Health Engineering at Babol University of Medical Sciences in Babol, Iran. Dr. Z. Yousefi is an associate professor in the Department of Environmental Health, School of Public Health, at Mazandaran University of Medical Sciences in Sari, Iran. Dr. A. H. Mahvi is an assistant professor in the Department of Environmental Health Engineering at Tehran University of Medical Sciences in Tehran, Iran. Dr. K. Naddafi is an associate...