Christensen Robert D, Paul David A, Sola-Visner Martha C, Baer Vickie L
Department of Women and Newborns, Intermountain Healthcare, Salt Lake City, Utah, USA.
Transfusion. 2008 Nov;48(11):2281-4. doi: 10.1111/j.1537-2995.2008.01928.x. Epub 2008 Sep 16.