Chatterjee, Riksoam, Mansi Gupta, Zia Hashim, Ajmal Khan, Alok Nath, and Vikas Aggarwal. “Relationship of Fractional Exhaled Nitric Oxide With Blood Eosinophilia in Characterizing Type-2 Airway Inflammation in Treatment-Naïve Patients With Chronic Obstructive Pulmonary Disease”. Monaldi Archives for Chest Disease 96, no. 3 (July 21, 2025). Accessed October 23, 2026. https://www.monaldi-archives.org/macd/article/view/3315.