The Journal of Occupational Health and Epidemiology is a peer-reviewed quarterly English publication published by the Rafsanjan University of Medical Sciences. JOHE follows guidelines on editorial independence produced by the world Associations of Medical Editors and the code on good Publication Practice of the Committee on Publication Ethics. JOHE is intended for health and medical professionals. Statements of fact and opinion in the journal are the responsibility of their respective authors and contributors and not of the JOHE. The reader is advised to verify any information he/she chooses to rely on JOHE.