1. European Synchrotron Radiation Facility, Grenoble, France;
2. Department of Physics, University of Helsinki, Helsinki, Finland;
3. Department of Medical Informatics and Engineering, University of Szeged, Szeged, Hungary;
4. Department of Clinical Physiology and Nuclear Medicine, Helsinki University Central Hospital, Helsinki, Finland;
5. Geneva Children's Hospital, University Hospitals of Geneva and Geneva University, Geneva, Switzerland; and
6. Université de Picardie Jules Verne, EA4285 Péritox UMI01 INERIS and Department of Pediatric Cardiology and Pulomonary Medicine, CHU Amiens, Amiens, France