Long-term immunogenicity studies of formalin-inactivated enterovirus 71 whole-virion vaccine in macaques. oleh Chia-Chyi Liu, Chyi-Sing Hwang, Wun-Syue Yang, Dan-Chin Tsai, Sze-Hsien Wu, Ai-Hsiang Chou, Yen-Hung Chow, Suh-Chin Wu, Jen-Ren Wang, Jen-Ron Chiang, Chin-Cheng Huang, Chien-Hsiung Pan, Pele Chong