Author ' s response to reviews Title : Clinical Features and Risk factors for Severe and Critical Pregnant Women with 2009 Pandemic H 1 N 1 Influenza Infection in China

Peng-jun Zhang (15801669400@163.com) Xiao-li Li (5162202@163.com) Bin Cao (caobin1999@gmail.com) Shi-gui Yang (ysgcdc@163.com) Li-rong Liang (llrcruie@yahoo.com.cn) Li Gu (guliangel@yahoo.com.cn) Zhen Xu (xuzhen@chinacdc.cn) Ke Hu (huke-rmhospital@163.com) Hong-yuan Zhang (zhyly2008@yahoo.cn) Xi-xin Yan (yanxixin@hotmail.com) Wen-bao Huang (hub11281225@163.com) Wei Chen (188006918@qq.com) Jing-xiao Zhang (zjingxiao1101@163.com) Lan-juan Li (ljli@zju.edu.cn) Chen Wang (cyh-birm@263.net)