I. Mappangara, P. Kabo, M. Amir, Z. Djafar, M. Warliani, and A. Mustafa, “Six-minute walking test distance predicts readmission in hospitalized heart failure patient in integrated cardiac centre, Makassar, Indonesia”, Int J Res Med Sci, vol. 8, no. 12, pp. 4360–4364, Nov. 2020.