Deregnier Raye-Ann, Ballard Roberta, O'shea T Michael, Piecuch Robert, Walsh Michele, Aschner Judy L
Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
J Perinatol. 2005 Jun;25(6):423-5. doi: 10.1038/sj.jp.7211331.