1. Medical Faculty, University of Regensburg, 93053 Regensburg, Germany
2. eHealth Competence Center Bavaria, Deggendorf Institute of Technology, 94469 Deggendorf, Germany
3. First Medical Faculty, Charles University of Prague, 11000 Staré Město, Czech Republic
4. Faculty of Information Technology and Communication Sciences, Tampere University, 33100 Tampere, Finland
5. Department of Biomedical Informatics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
6. Informatics Institute, Federal University of Rio Grande do Sul, Porto Alegre 90040-060, Brazil
7. IBM-Retired, Tucson, AZ 85750, USA