[1] University of Tartu,Department of Public Health
[2] University of Sheffield Medical School,Centre for Metabolic Bone Diseases
[3] Karolinska Institutet,Medical Management Centre
[4] Mapigroup,Unit of Dermatology and Venereology, Department of Medicine, Karolinska Institutet
[5] Karolinska Universitetssjukhuset,Department of Internal Medicine
[6] University of Tartu and Tartu University Hospital,undefined