“Fatigue Symptom and Oximetry Sign in a Patient With a Positive Covid-19 Antigen Test for Sars-Cov-2: Investigation Article”. Journal of Medical Biomedical and Applied Sciences, vol. 10, no. 5, Aug. 2022, pp. 3122-35, https://jmbm.in/index.php/jmbas/article/view/330.