Nishfa Dewi, Wan, Hellena Deli, Safri Safri, Yulia Rizka, and Irwan Irwan. 2023. “Application of Precordial Lead ECG SafOne to Patients With Cardiovascular Disease: Evidence-Based Practice”. KnE Medicine 3 (2), 120–128. https://doi.org/10.18502/kme.v3i2.13044.