Promsarn , S. and Butrakhum, W. (2021) “6-Minute Walk Test (6MWT) During the Coronavirus Disease 2019 (COVID-19)”, Siriraj Medical Bulletin, 14(1), pp. 57–63. available at: https://he02.tci-thaijo.org/index.php/simedbull/article/view/244465 (accessed: 20 September 2026).