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Birth Defects Orig Artic Ser. 1980;16(2):231-7.
+ u$ T1 i9 k+ p) w7 p+ Z- C5 C3 LHuman newborn urine as a source of epithelial cells.
9 U2 R, ]7 k3 S% F3 m' I$ VFelix JS, Littlefield JW., [0 X2 g. q  R8 R
http://www.ncbi.nlm.nih.gov/pubmed/7213967