“…A total of 2235 articles were screened, scrutinized 109 full-text articles, and ultimately 26 studies met the inclusion criteria for meta-analysis (Figure 1). Those studies documented patients with and without olfactory and gustatory dysfunction(Le Sanli et al, 2021;Rojas-Lechuga et al, 2021;Sayın et al, 2021;Dev et al, 2021;Sheng et al, 2021;Elibol and Baran, 2021;Samimi et al, 2021;Sahoo et al, 2021;Singer-Cornelius et al, 2021;Porta-Etessam et al, 2021;Gupta et al, 2021;Soh et al, 2021;Tabari et al, 2021;Jain et al, 2021;Lee et al, 2021;Cheng et al, 2021;Ahn and Min, 2021;Klopfenstein et al, 2020;Lv et al, 2020;Jalessi et al, 2020;Petrocelli et al, 2020;Prajapati et al, 2020;Shah et al, 2020;Altundag et al, 2020;Tham et al, 2020).The 83 excluded articles and the reasons for exclusion are 6 provided in Table 2 in the Supplement.…”