Khaled, Md Saifuddin, Firoza Akter, Khadija Rahman, Mohammad Shahid Ullah, and Md Hamidur Rahman. 2014. “Bronchodilator Response to Salbutamol Delivered by Metered Dose Inhaler With Spacer and Dry Powder Inhaler in Acute Asthma In Children: A Comparative Study”. Bangladesh Journal of Child Health 38 (2):68-73. https://doi.org/10.3329/bjch.v38i2.21138.