Vianelli N, Giannini M, Quarti C, Sabattini MB, Fiacchini M, de Vivo A, Graldi P, Galli S, Nanetti A, Baccarani M, Ricci P. Resolution of a Pseudomonas aeruginosa outbreak in a hematology unit with the use of disposable sterile water filters. Haematologica 2006; 91(7):983-985.