George, A. T., G. George, D. K. Simson, and T. P. Antony. “A Cross Sectional Analysis on the Clinical Presentation and Outcome of H1N1 Influenza Patients in a Tertiary Care Hospital in Central Kerala”. International Journal of Advances in Medicine, vol. 6, no. 2, Mar. 2019, pp. 302-5, doi:10.18203/2349-3933.ijam20191038.