1. Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden;
2. Karolinska Institutet, Department of Molecular Medicine and Surgery, Karolinska University Hospital, Solna, Stockholm, Sweden;
3. Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Center for Family and Community Medicine (CeFAM), Huddinge, Sweden; and
4. McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Alberta, Canada