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Tsukahara H, Hiraoka M, Mayumi M. Many confounding factors influencing urinary beta(2)-microglobulin excretion in premature newborns. J Pediatr. 2004 Jun;144(6):835–6; author reply 836. doi: 10.1016/j.jpeds.2004.02.039. PMID: 15212063. |