?:authorAffiliation
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[\'Department of Paediatrics, Alvaro Cunqueiro University Hospital, Vigo, Spain. Electronic address: ana.concheiro.guisan@sergas.es.\', \'Department of Paediatrics, Alvaro Cunqueiro University Hospital, Vigo, Spain.\', \'Methodology and Statistics Unit, Galicia Sur Health Research Institute (IISGS), Vigo, Spain.\', \'Department of Otorhinolaryngology, Clinical University Hospital, Santiago de Compostela, Spain.\']
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