Poralla Christine, Hertfelder Hans-Jörg, Oldenburg Johannes, Müller Andreas, Bartmann Peter, Heep Axel
Department of Neonatology, University of Bonn, Bonn, Germany.
Acta Paediatr. 2010 Feb;99(2):298-300. doi: 10.1111/j.1651-2227.2009.01551.x. Epub 2009 Oct 15.