Microbial investigation of biofilms recovered from endotracheal tubes using sonication in intensive care unit pediatric patients. - Ferreira Tde O; Koto RY; Leite GF; Klautau GB; Nigro S; Silva CB; Souza AP; Mimica MJ; Cesar RG; Salles MJ (The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases, 2016)