Funding: This work has been partially supported by a grant from AstraZeneca®. Thermo Fisher Scientific, Inc. provided the materials for exhaled nitric oxide measurements. AstraZeneca® and Thermo Fisher Scientific, Inc. had no role in the study design, conduct of the research, preparation or submission of the article; Background: Rhinitis and asthma frequently coexist. Peak nasal inspiratory flow (PNIF) objectiv...