TY - JOUR AU - Eknoyan, G TI - Looking at the urine: the renaissance of an unbroken tradition JO - Am J Kidney Dis VL - 49 PY - 2007 DO - 10.1053/j.ajkd.2007.04.003 L3 - PubMed-ID: 17533032 SP - 865 EP - 872 ER -