Elfira E. Aplikasi Latihan PMR (Progressive Muscle Relaxation) berbasis Arduino UNO pada pencegahan nyeri sendi Lansia. jpb [Internet]. 2021Jul.19 [cited 2024May1];3(02):42-5. Available from: https://ejournal.upbatam.ac.id/index.php/jpkm/article/view/3680