[1
]
Football Research Group, Linköping University, Linköping, Sweden Division of Community
Medicine, Department of Medical and Health Sciences, Linköping University, Linköping,
Sweden Department of Orthopaedics, Hässleholm-Kristianstad-Ystad Hospitals, Hässleholm,
Sweden.
[2
]
Football Research Group, Linköping University, Linköping, Sweden Division of Physiotherapy,
Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.
[3
]
Football Research Group, Linköping University, Linköping, Sweden Division of Community
Medicine, Department of Medical and Health Sciences, Linköping University, Linköping,
Sweden.