1 European Medical Students' Association, 1040 Brussels, Belgium; Medical University of Warsaw, Warsaw, Poland. Electronic address: j.f.skrzypczak@gmail.com.
2 European Medical Students' Association, 1040 Brussels, Belgium; University of Cologne, Department of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Cologne, Germany.
3 European Medical Students' Association, 1040 Brussels, Belgium.