Screening of COVID-19 in outpatient children with cancer or solid organ transplantation: preliminary report. - Cleto-Yamane, Thaís Lira; Rodrigues-Santos, Gustavo; de Magalhães-Barbosa, Maria Clara; Moura, Patrícia Gomes; Vasconcelos, Rafael Dias; Gouveia, Jaqueline Leal Santos; de Oliveira, Anne Louise; Ferreira, Fernanda Couto; Shalders, Ana Letícia; de Oliveira, Mariana Barros Genuíno; Lima-Setta, Fernanda; da Cunha, Antonio José Ledo Alves; et al. (European Journal of Pediatrics, 2021)