Key points are not available for this paper at this time.
†Departments of Orthopedics and Diagnostic Radiology, Städtische Kliniken, Syburger Strasse 14, D-44265, Dortmund, Germany. ‡Institute of Medical Informatics and Biomathematics, University of Münster, Domack Strasse 9, D-48149 Münster, Germany.
Tönnis et al. (Wed,) studied this question.