9Rigby D. Urinary tract infections: The hidden cause.Community Nume, 1998,4 (5) :30.
10Srlvastava A, Ahlawat R, Kumar A, et al. Management of impacted upper ureterlc calculi: Results of lithotrlpsy and percutaneous litholapaxy. Br J Urol, 1992,70:252-257.