3Lin Y E,Vidic R D,Stout J E,et al.Legionella in water distribution systems.JAWWA,1998,90(9):112～121
4Liu Z M,Stout J E,Tedesco L,et al.Conrolled evaluation of copper-silver ionization in eradicating legionella pneumophila from a hospital water distribution system.Journal of Infections Deseases,1994(169):919～922
