Authors: Frank P Mockenhaupt; Jakob P Cramer; Lutz Hamann; Miriam S Stegemann; Jana Eckert; Na-Ri Oh; Rowland N Otchwemah; Ekkehart Dietz; Stephan Ehrhardt; Nicolas W J Schröder; Ulrich Bienzle; Ralf R Schumann Journal: Proc Natl Acad Sci U S A Date: 2005-12-21 Impact factor: 11.205