NURUL IMAM; ALFIAN BAYU INDRAWAN; ROFI SYAHRIZAL; SHAFAAT PRANATA. Intervention of Progressive Muscle Relaxation on Anxiety and Sleep Quality in COVID-19 Patients : A Systematic Review. Poltekita : Jurnal Ilmu Kesehatan, [S. l.], v. 16, n. 3, p. 402–408, 2022. DOI: 10.33860/jik.v16i3.1259. Disponível em: https://jurnal.poltekkespalu.ac.id/index.php/JIK/article/view/1259. Acesso em: 7 oct. 2024.