TY  - JOUR
AU  - Cao, B.
TI  - Clinical features of the initial cases of 2009 pandemic influenza A (H1N1) virus infection in China
JA  - N. Engl. J. Med.
PY  - 2009///
PB  - Nature Publishing Group
M3  - 10.1056/NEJMoa0906612
N1  - 10.1056/NEJMoa0906612
UR  - http://dx.doi.org/10.1056/NEJMoa0906612
ER  -