MOTAZEDIAN, G.; ARYANPOOR, P.; RAHMANIAN, E.; ABIRI, S.; KALANI, N.; HATAMI, N.; BAGHERIAN, F.; ETEZADPOUR, M.; FARZANEH, R.; MALEKI, F.; FOROUGHIAN, M.; GHAEDI, M. Incidence of Pediatric Perforated Appendicitis during the COVID-19 Pandemic; a Systematic Review and Meta-Analysis. Archives of Academic Emergency Medicine, v. 10, n. 1, p. e3, 1 Jan. 2022.