Abbreviations
ALT: Alanine aminotransferase, Anti-TNF: Anti-tumor necrosis factor, AST: Aspartate aminotransferase, CK: creatine kinase, COVID-19: Coronavirus disease 2019, CRP: c-reactive protein, ESR: Erythrocyte sedimentation rate, HCoV-NH: Human New Haven coronavirus, Ig: Immunoglobulins, LDH: Lactate dehydrogenase NT-proBNP: N-terminal pro b-type natriuretic peptide, PICU: Pediatric intensive care unit, PRISMA: Preferred Reporting Items for Systematic reviews and Meta-analysis, RT-PCR: Reverse transcription-polymerase chain reaction, SARS- COV-2: Severe acute respiratory syndrome-coronavirus -2, WBCs: White blood cells count.