Accuracy of peak nasal flow to determine nasal obstruction in patients with allergic rhinitis oleh Gardênia Maria Martins de Oliveira, Marco Aurélio de Valois Correia Júnior, Emilia Chagas Costa, Georgia Véras de Araújo Gueiros Lira, José Ângelo Rizzo, Steve Hunter, Nádia Gaua, Emanuel Sávio Cavalcanti Sarinho