1. World Health Organization. WHO issues a global alert about cases of atypical pneumonia. March 12, 2003. [accessed June 10, 2003]. Available from: http://www.who.int/csr/sars/archive/2003_03_12/en/print.html
2. World Health Organization. Cumulative number of reported probable cases of SARS. [accessed Nov 27, 2003]. Available from: http://www.who.int/csr/sars/country/2003_06_30/en/print.html
3. World Health Organization. Case definitions for surveillance of severe acute respiratory syndrome (SARS). Revised 1 May 2003. [accessed June 10, 2003]. Available from: http://www.who.int/csr/sars/casedefinition/en/print.html
4. Coronavirus as a possible cause of severe acute respiratory syndrome.;Peiris;Lancet,2003
5. Identification of a novel coronavirus in patients with severe acute respiratory syndrome.;Drosten;N Engl J Med,2003