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An abrupt attack ofsevere acute respiratorysyndrome(SARS)brokeout in Beijing in thespring in 2003,withthousands of patientssuffering from the mala-dy and hundreds of vic-tims on the death toll,which seriously threat-ened the people’s life and
An abrupt attack of severe acute respiratorysyndrome (SARS) brokeout in Beijing in the spring of 2003, with thousands of patientsssuffering from the mala-dy and hundreds of vic-tims on the death toll, which seriously threat-ened the people’s life and