Kumar, Raj, Sonam Spalgais, and Vikrant Ranga. “Hypersensitivity Pneumonitis: Clinical, Radiological and Pathological Profile of 103 Patients from North India”. Monaldi Archives for Chest Disease 90, no. 3 (August 3, 2020). Accessed April 23, 2024. https://www.monaldi-archives.org/macd/article/view/1307.