Hemorrhagic PRES: an unusual neurologic manifestation in two COVID-19 patients - Daniel Aguiar Dias; Lara Albuquerque de Brito; Luciana de Oliveira Neves; Roberto Guido Santos Paiva; Octávio Alencar Barbosa Júnior; José Wagner Leonel Tavares-Júnior (Arquivos de Neuro-Psiquiatria)