Pryles, C.V. , Atkin, M.D., Morse, T.S., and Welch, K.J.: Comparative bacteriologic study of urine obtained from children by percutaneous suprapubic aspiration of the bladder and by catheter. Pediatrics24: 983, 1959.
2.
McCarthy. J.M. , and Pryles, C.V.: Clean voided and catheter neonatal urine specimens. Bacteriology in the male and female neonate. Am. J. Dis. Child.106: 473, 1963,
3.
Levin, J.: The incidence and prevention of infection after urethral catheterization. Ann. Intern. Med.60: 914, 1964.