“…After assessment of abstracts and methods to determine eligible articles; Total 57 articles were excluded (the reasons either no cases included, review articles or symptoms and outcomes were not investigated). The remaining 25 articles are found to be eligible (Breslin et al, 2020a;Breslin et al, 2020b;Cao et al, 2020;Chen et al, 2020a;Chen et al, 2020b;Chen et al, 2020c;Fan et al, 2020;Govind et al, 2020;Hantoushzadeh et al, 2020;Hirshberg et al, 2020;Khan et al, 2020;Liu et al, 2020a;Liu et al, 2020b;Liu et al, 2020c;Lokken et al, 2020;Lu et al, 2020;Pierce-Williams et al, 2020;Polónia-Valente et al, 2020;Wang et al, 2020;Wen et al, 2020;Wu et al, 2020;Xu et al, 2020;Yu et al, 2020;Zambrano et al, 2020;Zhu et al, 2020); they consist of letters, case reports or series, and research articles.…”