TY - JOUR T1 - Age related reference ranges of heart rate for Saudi children and adolescents JF - Saudi Medical Journal JO - Saudi Med J SP - 341 LP - 341 VL - 31 IS - 3 AU - Mahmood D. Al-Mendalawi Y1 - 2010/03/01 UR - http://smj.org.sa/content/31/3/341.abstract ER -