1 Institute for Sports Medicine, Alpine Medicine and Health Tourism, Tirol Kliniken GmbH, Tirol, Austria. arnold.koller@tirol-kliniken.at.
2 Institute for Sports Medicine, Alpine Medicine and Health Tourism, Tirol Kliniken GmbH, Tirol, Austria.
3 Institute for Sports Medicine, Alpine Medicine and Health Tourism, University for Health Sciences, Medical Informatics and Technology (UMIT), Hall/Tirol, Austria.