Hamid A, Wisanti E, Ezdha AUA. Effectiveness Nursing Intervention of Progressive Muscle Relaxation (PMR) on the Fatigue Level of the Older Adults Covid 19 Survivors at Pekanbaru. J Keskom [Internet]. 2023 Jul. 31 [cited 2024 May 14];9(2):313-9. Available from: https://jurnal.htp.ac.id/index.php/keskom/article/view/1340