A.-A. Shaukat, A. Zar, M. Zuhaid, S. S. Afridi, and A. U. Khan, “CORRELATION OF DEVIANCE IN ARTERIAL OXYGENATION WITH SEVERITY OF CHRONIC LIVER DISEASE”, J Ayub Med Coll Abbottabad, vol. 28, no. 2, pp. 331–336, Jun. 2016.