Vieira, Marcelo Adriano da Cunha e Silva, et al. “Guillain-Barré Syndrome and Dengue-Like Disease in 2015: Temporal Relationship in Piauí State and Implications on Zika Virus Surveillance”. Revista Do Instituto De Medicina Tropical De São Paulo, vol. 59, Jan. 2017, p. e22, https://revistas.usp.br/rimtsp/article/view/131377.