Purnama A, Hardian I, Noprida D, Febriyanti H, Mamang A, Wahidi KD, et al. Characteristics of Sleep Patterns in Patients Before COVID-19 Diagnosis. sjik [Internet]. 2021 May 2 [cited 2025 Sep. 15];10(1):206-12. Available from: https://sjik.org/index.php/sjik/article/view/604