Database searching strategy
Electronic database searches were performed with EMBASE, Scopus, and PubMed/Medline from inception to June 2020. In addition to these databases, the bibliographies of relevant reports and Google Scholar were also used to find studies. The searching keywords were applied using a Boolean strategy (Supplementary Table 1). The searching citations were limited to human-based reports and the English language. In addition, the bibliographies of relevant studies and review articles were manually searched.