K. Rami, P. Damor, G. P. Upadhyay, and N. Thakor, “Profile of patients of spontaneous pneumothorax of North Gujarat region, India: a prospective study at GMERS medical college, Dharpur-Patan”, Int J Res Med Sci, vol. 3, no. 8, pp. 1874–1877, Jan. 2017.