1 Division of Endocrinology, Diabetes and Bone Diseases, Department of Medicine III and Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany.
2 Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, United Kingdom.
3 Rheumatic Diseases Unit, Western General Hospital, Edingburgh, United Kingdom.
4 Department of Internal Medicine, Division of Endocrinology, Center for Bone Quality, Leiden University Medical Center, Leiden, Netherlands.