Luthfiyah, S., Utomo, B., & Ariswati, H. G. (2025). Use Chest Vibrator to Prevent Pulmonary Infection in Patients with COPD . Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics, 1(2), 81-84. https://doi.org/10.35882/ijeeemi.v1i2.255