RT Journal Article SR Electronic T1 More on SARS and the evidence base for public health JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 837 OP 837 DO 10.1136/jech.57.11.837 VO 57 IS 11 A1 Alvarez-Dardet, Carlos A1 Ashton, John R YR 2003 UL http://jech.bmj.com/content/57/11/837.abstract AB