So, L. K., Lau, A. C., Yam, L. Y., Cheung, T. M., Poon, E., Yung, R. W., & Yuen, K. (2003). Development of a standard treatment protocol for severe acute respiratory syndrome. Lancet.

So, Loletta K-Y, Arthur CW Lau, Loretta YC Yam, Thomas MT Cheung, Edwin Poon, Raymond WH Yung, ja KY Yuen. "Development of a Standard Treatment Protocol for Severe Acute Respiratory Syndrome." Lancet 2003.

So, Loletta K-Y, et al. "Development of a Standard Treatment Protocol for Severe Acute Respiratory Syndrome." Lancet 2003.