This article was republished on April 10, 2015, to correct Figs. 2 and 3, which were distorted during the production process. The publisher apologizes for the error. Please download this article again to view the correct version. The originally published, uncorrected article and the republished, corrected article are provided here for reference.
Authors: Ömer Poyraz; Katharina Brunner; Bernhard Lohkamp; Hanna Axelsson; Lars G J Hammarström; Robert Schnell; Gunter Schneider Journal: PLoS One Date: 2015-03-25 Impact factor: 3.240