Hasbi, Habid Al, et al. “Progressive Muscle Relaxation to Reduces Chronic Pain in Hemodialysis Patient”. MEDISAINS: Jurnal Ilmiah Ilmu-Ilmu Kesehatan, vol. 17, no. 3, Jan. 2020, pp. 62-66, doi:10.30595/medisains.v17i3.5823.