Farias, G.M. de, Melo, C.R. de, Freitas, M.C. da S., Botarelli, F.R. and Barros, W.C.T. dos S. 2011. 45 - NURSING STAFF MAINTENANCE OF MECHANICAL VENTILATION CIRCUITS AND DEVICES IN THE PREVENTION OF INFECTION. Fiep Bulletin - online. 80, 2 (Dec. 2011).