Lee, C. K., Lee, H. K., Loh, T. P., Lai, F. Y., Tambyah, P. A., Chiu, L., . . . Tang, J. W. (2011). Comparison of Pandemic (H1N1) 2009 and Seasonal Influenza Viral Loads, Singapore. Centers for Disease Control and Prevention.

Lee, Chun K., Hong K. Lee, Tze P. Loh, Florence Y.L Lai, Paul A. Tambyah, Lily Chiu, Evelyn S.C Koay, and Julian W. Tang. Comparison of Pandemic (H1N1) 2009 and Seasonal Influenza Viral Loads, Singapore. Centers for Disease Control and Prevention, 2011.

Lee, Chun K., et al. Comparison of Pandemic (H1N1) 2009 and Seasonal Influenza Viral Loads, Singapore. Centers for Disease Control and Prevention, 2011.