In the article that appeared on page 404 of July-August 2014 issue[1], authors affiliation was incorrectly displayed. Authors affiliation should have appeared as given below:1Associate Professor, Infection Nosocomial Research Center, Department of Infectious Diseases, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran.2Department of Biostatistics, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.3Student Research PhD, Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.4Department of Midwifery, School of Nursing and Midwifery, Isfahan University of Medical Sciences, Isfahan, Iran.