Modification of the gasless fetoscopy technique for the treatment of large myelomeningocele: a study in sheep - Pedreira, Denise Araujo Lapa; Acácio, Gregório Lorenzo; Abou-Jamra, Rogério Chaccur; Oliveira, Rita de Cássia sanches; Caldini, Elia Tamaso Espin Garcia; Saldiva, Paulo Hilário Nascimento (Einstein, 2010)