Erratum to: Population seroprevalence of antibody to influenza A(H7N9) virus, Guangzhou, China

oleh: Yong Ping Lin, Zi Feng Yang, Ying Liang, Zheng Tu Li, Helen S. Bond, Huiying Chua, Ya Sha Luo, Yuan Chen, Ting Ting Chen, Wen Da Guan, Jimmy Chun Cheong Lai, Yu Lam Siu, Si Hua Pan, J. S. Malik Peiris, Benjamin J. Cowling, Chris Ka Pun Mok