Aguilar, R. . “Fatigue Symptom and Oximetry Sign in a Patient With a Positive Covid-19 Antigen Test for Sars-Cov-2”. Jour Med Resh and Health Sci, vol. 5, no. 8, Aug. 2022, pp. 2165-76, doi:10.52845/JMRHS/2022-5-8-5.