title: In Response to: Prediction of Maximal Heart Rate in Children and Adolescents: Prediction Study in Cross-Sectional Design, Is It True?
authors.affiliation: *Department of Epidemiology, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran †Department of Epidemiology & Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Erfan
authors.initials: E
authors.lastname: Ayubi
mesh_terms: D000293:Adolescent; D002648:Child; D003430:Cross-Sectional Studies; D006339:Heart Rate; D006801:Humans