Chang, Yu-Kang, et al. “Hand, Foot and Mouth Disease and Herpangina Caused by Enterovirus A71 Infections: A Review of Enterovirus A71 Molecular Epidemiology, Pathogenesis, and Current Vaccine Development”. Revista Do Instituto De Medicina Tropical De São Paulo, vol. 60, Nov. 2018, p. e70, https://www.revistas.usp.br/rimtsp/article/view/151629.