1. Enquête nationale de prévalence des infections nosocomiales, 1996;BEH,1997
2. Bacteriuria-sampling methods and significance;Pfau;Infection,1994
3. Perineal cleansing before midstream urine, a necessary ritual?;Morris;Lancet,1979
4. The myth of clean-catch urine specimem;Immergut;Urology,1981
5. Is the clean-catch midstream void procedure necessary for obtaining culture specimens from men?;Lipsky;Am J M,1984