Ramy Abdallah, Marwa Alharbi, Ammar Katib, Khadijah Hawsawi, Lujain Madani, and Amjad Aldadi, “THE 2019 CORONAVIRUS DISEASE EVOLUTION (COVID-19) SYMPTOMS IN THE FIRST TWELVE MONTHS OF THE ILLNESS”, J Popl Ther Clin Pharmacol, vol. 29, no. 04, pp. 3842–3849, Oct. 2022, doi: 10.53555/jptcp.v29i04.6068.