Shahi, Rejina, et al. “Diagnostic Yield of Bronchoalveolar Lavage in Nepalese Patients Presenting With Chronic Cough With Normal Radiological Imaging in Tertiary Care Hospital”. Nepalese Respiratory Journal, vol. 1, no. 2, Dec. 2022, pp. 4-7, doi:10.3126/nrj.v1i2.54902.