[1
]
Department of Health Economics and Health Services Research, University Medical Center
Hamburg-Eppendorf, Germany; Research Unit for Musculoskeletal Function and Physiotherapy,
Department of Sports Science and Clinical Biomechanics, University of Southern Denmark,
Denmark. Electronic address: l.baumbach@uke.de.
[2
]
Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports
Science and Clinical Biomechanics, University of Southern Denmark, Denmark.
[3
]
Research Unit for Exercise Epidemiology, Centre of Research in Childhood Health, Department
of Sports Science and Clinical Biomechanics, University of Southern Denmark, Denmark.
[4
]
Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports
Science and Clinical Biomechanics, University of Southern Denmark, Denmark; The Research
Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted
Hospitals, Denmark.