2.1 Search strategy
This current meta-analysis was carried out according to the Preferred Reporting Items for Systematic reviews and Meta-analysis (PRISMA) statement.17 Relevant literature was retrieved from Web of Science, PubMed, Scopus, and Science Direct search engines up to June 30, 2020. Our search strategy included the following terms: (“Novel coronavirus 2019”, “2019 nCoV”, “COVID-19”, “Wuhan coronavirus,” “Wuhan pneumonia,” or “SARS-CoV-2”) and (“Kawasaki-like disease”, “Kawasaki disease”, “Kawasaki syndrome”, “multisystem inflammatory syndrome”, “pediatric inflammatory syndrome”, or “pediatric inflammatory, multisystem syndrome”). Besides, we manually screened out the relevant potential article in the references selected. The above process was performed independently by three participants.