1. Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, 1200 Vienna, Austria
2. Department of Physiology, School of Medicine, University of Puerto Rico, San Juan, PR 00936-5067, USA
3. Excellence Cluster Cardio-Pulmonary Institute, Universities of Giessen and Marburg Lung Center, Member of the German Center for Lung Research, Justus-Liebig-University, 35392 Giessen, Germany