1 Department of Physiology, Institute for Environmental Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States.
2 Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
3 Department of Thoracic Surgery, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany.
4 Radiologic Science, Biochemistry and Biophysics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States.