- Professor Christian Gebler Medical Director Vienna City Marathon;
- Dr. Austrian national team in American football;
- Doctor Raiffeisen Vikings American football club;
- Schief Medical Officer of the European Championship 2008;
- Schief Medical Officer of the American Football World Cup 2011;
- Schief Medical Officer of the American Football European Championship in 2014.
- Specialist of traumatology, sports traumatology and sports medicine.
- Specialist of arthroscopy and minimally invasive surgical procedures in the knee, shoulder, hip and ankle joints in a private clinic Josefstadt.