Lakshminarayanan , S., S. S. Kar, G. Roy, and T. Dutta. “Awareness Of Influenza A (H1n1) Among Nurses in A Tertiary Care Hospital in South India”. National Journal of Community Medicine, vol. 3, no. 03, Sept. 2012, pp. 568-9, https://www.njcmindia.com/index.php/file/article/view/1767.