title: A Letter to the Editor on the Article by Farnam et al.-Author's Response.
authors.affiliation: Department of Nursing and Midwifery, Isfahan University of Medical Sciences Isfahan, Iran.
authors.forename: Farnam
authors.initials: F
authors.lastname: Farnaz
authors.affiliation: Department of Epidemiology and Biostatistics, Isfahan University of Medical Sciences Isfahan, Iran.
authors.forename: Mohsen
authors.initials: M
authors.lastname: Janghorbani
authors.affiliation: Iranian National Center of Addiction Studies (INCAS), Iranian Institute for Reduction of High-Risk Behaviors, Tehran University of Medical Sciences Tehran, Iran.
authors.forename: Effat
authors.initials: E
authors.lastname: Merghati-Khoei