1Department of Clinical Chemistry, CHU de Liège, University of Liège, Liège, Belgium
2Division of Public Health, Epidemiology and Health Economics, WHO Collaborating Center for Public Health Aspects of Musculo-Skeletal Health and Ageing,, University of Liège, Liège, Belgium
3Biochemistry Department, College of Science, Chair for Biomarkers of Chronic Diseases, King Saud University, Riyadh, 11451 Saudi Arabia
4Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
5Geriatric Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
6Geriatria, Accettazione Geriatrica e Centro Di Ricerca Per L’invecchiamento, IRCCS INRCA, Ancona, Italy
7Laboratory of Clinical and Therapeutical Pharmacology, Lisbon, Portugal
8MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK
9Servicio de Geriatría. Hospital Universitario Ramón Y Cajal (IRYCIS), Madrid, Spain
10Department of Geriatrics, Neurosciences and Orthopedics, Catholic University of the Sacred Heart, Rome, Italy
11Scientific Office, Federal Office for Safety in Health Care, Vienna, Austria
12CNR Aging Branch-IN, Padua, Italy
13State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
14Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland
15Department of Joint Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
16Landspitali, University Hospital of Iceland, Reykjavik, Iceland
17Department of Diabetes, Nutrition and Metabolic Disorders, Clinical Pharmacology, University of Liege, CHU de Liège, Liège, Belgium
18Department of Health Sciences, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
19Agencia Española de Medicamentos Y Productos Sanitarios, Madrid, Spain
20Faculty of Medicine, Service of Bone Diseases, Geneva University Hospitals, Geneva, Switzerland