Nawangasri, Andis Putri, Budiono Budiono, Arief Bakhtiar, Budi Sutikno, Esti Maulidya Suryaningrum, and Dahlia Damayanti. 2022. “The Relationship Between Physical Activity and FEV1/FVC in Asthmatics”. Surabaya Physical Medicine and Rehabilitation Journal 4 (1):1-6. https://doi.org/10.20473/spmrj.v4i1.24726.