Sharma, A., A. Sharma, P. Jaret, M. Sarkar, and S. Sharma. “Clinical and Aetiological Spectrum of Spontaneous Pneumothorax in Adults in Sub-Himalayan: A Prospective Study at Tertiary Care Institute”. International Journal of Scientific Reports, vol. 4, no. 2, Jan. 2018, pp. 22-25, doi:10.18203/issn.2454-2156.IntJSciRep20180393.