Thornadtsson Alexandra, Drca Nikola, Ricciardolo Fabio, and Högman Marieann. “Increased Levels of Alveolar and Airway Exhaled Nitric Oxide in Runners”. Upsala Journal of Medical Sciences 122, no. 2 (May 8, 2017): 85–91. Accessed May 7, 2024. https://ujms.net/index.php/ujms/article/view/6242.