COVID-19(9) evaluated(5) oral manifestations(4) erythematous(3) manifestation(3) mucous membrane(3) children(3) syndrome(3) FIVE(3) SARS-CoV-2 antibody(3) screened(3) age(3) risk of bia(3) tongue(3) Grey literature(3) antibody(3) PROSPERO(3) multisystemic(3) Laboratory(3) diagnosed(3) Research(3) Grey(3) literature(3) pediatric multisystem inflammatory syndrome.(3) Web of Science(3) systematic review(3) LILACS(3) strawberry tongue(3) Asymptomatic(3) children with MIS-C(3)