3Haley R,Culver D,White J,et al. The nationwide nosocomial infection rate: a new need for vital statistics. Am J Epidemiol, 1985,121:159.
4Parson CL. Role of surface mucin in primary antibocterial defense of bladder. Urology, 1977,9:48.
5Gill WB,Ruggiero K,Strauss FH. II:Crystallization in a urothelial-lined living test tube (the catheterized female rat bladder). I :Calcium oxalate crystal adhesion to the chemically injured rat bladder. Invest Urol, 1979,17:257.
6Vollaard EJ, Clasener HAL, Zambon JV, et al.Prevention of catheter associated gram-negative bacilluria with norfloxacin by selective decontamination of the bowel and high urinary concentration. J Antimicrob Chemother, 1989,23:915.
7Fuse H,Ohkawa M,Nakashima T,et al.Crystal adherence to urinary catheter materials in rats. J Urol,1994,151:1703.