Siregar F, Panggabean G, Daulay R, Lubis H. Comparison of peak expiratory flow rate (PEFR) before and after physical exercise in obese and non-obese children. PI [Internet]. 1Mar.2009 [cited 22Nov.2024];49(1):20-. Available from: https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/451