1. WHO. Cumulative number of reported cases of severe acute res-piratory syndrome (SARS). March 31, 2003. Available from: http: //www.who. int/csr/sarsarchive/2003-03-31/en..
2. WHO. Weekly epidemiological record. 14 March 2003, 78th year / 14 March 2003. Available from: http: //www.who.int/wer/pdf/2003/ wer7811.pdf..
3. Berned Sebastian Kamps, Kamps-Hoffmann. 1. Timeline. SARS Reference (First Edition). May 8,2003. Available from: http: //sarsreference.com/ index.htm..
4. SARS and Carlo Urbani
5. WHO. Coronavirus never before seen in humans is the cause of SARS. 16 April 2003.. Available from: http: //www.who.int/csr/sarsarchive/ 2003-04-16/en/..