?:authorAffiliation
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[\'Postgraduate Program in Pulmonology, UFRGS, Porto Alegre, Brazil.\', \'Pediatric Pulmonology Section, Hospital da Criança Santo Antônio, Porto Alegre, Brazil.\', \'Pediatric Pulmonology Section, Hospital da Criança Santo Antônio, Porto Alegre, Brazil; Pediatrics Department, Federal University of Health Sciences of Porto Alegre, Brazil.\', \'Pediatric Pulmonology Section, Hospital da Criança Santo Antônio, Porto Alegre, Brazil; Porto Alegre City Health Department, Porto Alegre, Brazil.\', \'Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.\', \'Pediatric Pulmonology Section, Hospital da Criança Santo Antônio, Porto Alegre, Brazil; Pediatrics Department, Federal University of Health Sciences of Porto Alegre, Brazil; Postgraduate Program in Pediatrics, UFCSPA, Porto Alegre, Brazil. Electronic address: gilbertobf@ufcspa.edu.br.\']
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