Luthfiyah, Sari, Bedjo Utomo, and Her Gumiwang Ariswati. 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.