1. Alving K, Weitzberg E, Lundberg JM. Increased amount of nitric oxide in exhaled air of asthmatics. Eur Respir J 1993;6:1368-70.
2. Gustafsson LE, Leone AM, Persson MG, Wiklund NP, Moncada S. Endogenous nitric oxide is present in the exhaled air of rabbits, guinea pigs and humans. Biochem Biophys Res Commun 1991;181:852-7.
3. Song WJ, Kwon JW, Kim EJ, Lee SM, Kim SH, Lee SY, et al. Clinical application of exhaled nitric oxide measurements in a Korean population. Allergy Asthma Immunol Res 2015;7:3-13.
4. American Thoracic Society; European Respiratory Society. ATS/ERS recommendations for standardized procedures for the online and offline measurement of exhaled lower respiratory nitric oxide and nasal nitric oxide, 2005. Am J Respir Crit Care Med 2005;171:912-30.
7. Tanabe Y, Harada N, Ito J, Matsuno K, Takeshige T, Harada S, et al. Difference between two exhaled nitric oxide analyzers, NIOX VERO((R)) electrochemical hand-held analyzer and NOA280i((R)) chemiluminescence stationary analyzer. J Asthma 2019;56:167-72.
8. Pisi R, Aiello M, Tzani P, Marangio E, Olivieri D, Chetta A. Measurement of fractional exhaled nitric oxide by a new portable device: comparison with the standard technique. J Asthma 2010;47:805-9.
9. Khalili B, Boggs PB, Bahna SL. Reliability of a new hand-held device for the measurement of exhaled nitric oxide. Allergy 2007;62:1171-4.
10. Korn S, Wilk M, Voigt S, Weber S, Keller T, Buhl R. Measurement of fractional exhaled nitric oxide: comparison of three different analysers. Respiration 2020;99:1-8.
11. Menzies D, Nair A, Lipworth BJ. Portable exhaled nitric oxide measurement: comparison with the “gold standard” technique. Chest 2007;131:410-4.
12. Tsuburai T, Kamide Y, Nakamura Y, Tomita Y, Hamada Y, Watai K, et al. Differences in fraction of exhaled nitric oxide values measured by two hand-helded analyzers (NObreath and NIOX Vero). Arerugi 2017;66:204-8.
14. Brozek JL, Bousquet J, Agache I, Agarwal A, Bachert C, Bosnic-Anticevich S, et al. Allergic Rhinitis and its Impact on Asthma (ARIA) guidelines-2016 revision. J Allergy Clin Immunol 2017;140:950-8.
15. Fokkens WJ, Lund VJ, Mullol J, Bachert C, Alobid I, Baroody F, et al. EPOS 2012: European position paper on rhinosinusitis and nasal polyps 2012: a summary for otorhinolaryngologists. Rhinology 2012;50:1-12.
16. Morice AH, Millqvist E, Bieksiene K, Birring SS, Dicpinigaitis P, Domingo Ribas C, et al. ERS guidelines on the diagnosis and treatment of chronic cough in adults and children. Eur Respir J 2020;55:1901136.
17. Global strategy for asthma management and prevention [Internet] Fontana, WI: Global Initiative for Asthma; 2020 [cited 2020 Oct 15]. Available from:
http://www.ginasthma.org
.
18. Bland JM, Altman DG. Comparing methods of measurement: why plotting difference against standard method is misleading. Lancet 1995;346:1085-7.
19. Cicchetti DV. Guidelines, criteria, and rules of thumb for evaluating normed and standardized assessment instruments in psychology. Psychol Assess 1994;6:284-90.
20. Fukuhara A, Saito J, Sato S, Sato Y, Nikaido T, Saito K, et al. Validation study of asthma screening criteria based on subjective symptoms and fractional exhaled nitric oxide. Ann Allergy Asthma Immunol 2011;107:480-6.
21. Kapande KM, McConaghy LA, Douglas I, McKenna S, Hughes JL, McCance DR, et al. Comparative repeatability of two handheld fractional exhaled nitric oxide monitors. Pediatr Pulmonol 2012;47:546-50.
22. Alving K, Anolik R, Crater G, LaForce CF, Rickard K. Validation of a new portable exhaled nitric oxide analyzer, NIOX VERO: randomized studies in asthma. Pulmo Ther 2017;3:207-18.
23. Antus B, Horvath I, Barta I. Assessment of exhaled nitric oxide by a new hand-held device. Respir Med 2010;104:1377-80.