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2. Hospital acquired urinary infections and the indwelling catheter;Andriole;Urol. Clin. North Ara.,1975
3. Comparison of collection tech niques for quantitative urine culture in dogs;Carter;J. Am. Vet. Med. Assoc.,1978
4. Incidence of bacteriuria with indwelling catheter in normal bladders;Cox;J.A.M.A,1961
5. Iatrogenic urinary infections;Dale;Urol. Clin. North Am.,1975