Wen, Yung-Sung Nasal nitric oxide is a useful biomarker for acute unilateral maxillary sinusitis in pediatric allergic rhinitis: A prospective observational cohort study. [electronic resource] - The World Allergy Organization journal 2019 - 100027 p. digital Publication Type: Journal Article ISSN: 1939-4551 Standard No.: 10.1016/j.waojou.2019.100027 doi