6European Confederation of Laboratory Medicine. European urinalysis guidelines. Scand J Clin Lab Invest Suppl,2000, 231:1-86.
7Clinical and Laboratory Standards Institute. Urinalysis and collection, transportation and preservation of Urin specimens. Approved Guideline. Gpl6A. Wayne, Pennsylvania, USA:CLSI, 1995,115:6-13.
8Nancy A. Brunzel fundamentals of unine and body fluid analysis. 2nd ed. Philadephia:Saunders, 2004:177-229.
