5Ohkaw M, Sugata T, Sawaki M, et al. Bacterial and crystal adherence to the surfaces of indwelling urethral catheters[J]. J Urol, 1990, 143(4): 717-9.
6Warren JW. The Catheter and urinary tract infection [J]. Med Clin North Am, 1991,25(2): 481-2.
7HaleyR, CuiverD, WhiteS, et al. The nationwide nosocomial infection rate. A new need for vital statistics [J]. Am S Epidemiol,1985, 121(2): 159-60.
8Classen DC, Lassen RA, Burke JP, et al. Prevention of catheter associated bacteria: clinical trial of methods to flock three know pathways of infection[J]. Am J Infect Control, 1991, 19(3): 136-9.
9Nacey JN, Delakunt B. Toxicity study of firsthand second generation hydrogel coated latex urinary catheters[J], Brit J Urol, 1991, 67(3):314-7.
10Brooks A. How to perform urinary catheterization [J]. Med Prog SEA, 1998, 25(1): 27-9.
