Adhitya, A., D. Tedjasukmana, E. Ginanjar, and D. Friska. “Safety of Six Minute Walking Test in Hospitalized Post-Percutaneous Coronary Intervention Patients: Analysis of Vital Signs, Borg Scale, and Angina Scale Responses”. Acta Medica Indonesiana, vol. 57, no. 1, Apr. 2025, p. 3, https://actamedindones.org/index.php/ijim/article/view/2468.