Environmental cultures and hospital-acquired Legionnaires' disease : a 5-year prospective study in 20 hospitals in Catalonia, Spain - Sabriá-Leal, M. (Miquel) (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Modol Deltell, Josep Maria (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Garcia-Nuñez, Marian (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Reynaga Sosa, Esteban Alberto (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Pedro-Botet Montoya, Ma Luisa (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Sopena, Nieves (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Rey-Joly Barroso, Celestino (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Universitat Autònoma de Barcelona