Amoxicillin‐clavulanate for patients with acute exacerbation of chronic rhinosinusitis: a prospective, double‐blinded, placebo‐controlled trial - Sabino, Henrique Augusto Cantareira; Valera, Fabiana Cardoso Pereira; Aragon, Davi Casale; Fantucci, Marina Zilio; Titoneli, Carolina Carneiro; Martinez, Roberto; Anselmo-Lima, Wilma Terezinha; Tamashiro, Edwin (International Forum of Allergy and Rhinology, 2017)