1. University of Coimbra Centre for Informatics and Systems of the University of Coimbra,Department of Informatics Engineering,Coimbra,Portugal,3030-290
2. The Medical School,2nd Department of Obstetrics and Gynaecology,Thessaloniki,Greece,54124
3. Aristotle University of Thessaloniki,Department of Mathematics,Thessaloniki,Greece,54124
4. University Medical Center Schleswig-Holstein Campus Kiel,Department of Anesthesiology, and Intensive Care Medicine,Kiel,Germany,24105