(2012-09-17) Seppä, Perttu; Johansson, Helena; Gyllenstrand, Niclas; Palsson, Snaebjorn; Pamilo, Pekka; University of Helsinki - Seppä, Perttu; University of Helsinki - Johansson, Helena; Uppsala University - Gyllenstrand, Niclas; University of Iceland - Palsson, Snaebjorn; University of Iceland - Pamilo, Pekka