aArthritis & Musculoskeletal Research Group, Faculty of Health Sciences, The University of Sydney, Sydney, Australia
bMusculoskeletal Division, The George Institute for Global Health, Sydney Medical School, The University of Sydney, Sydney, Australia
cMurcia Twin Registry, Department of Human Anatomy and Psychobiology, University of Murcia and IMIB-Arrixaca, Murcia, Spain
dDepartment of Quantitative Genetics, QIMR Berghofer Medical Research Institute, Brisbane, Australia
eCentre for Epidemiology & Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Australia
Corresponding author. Address: Faculty of Health Sciences, The University of Sydney, 75 East St, Lidcombe, Sydney, NSW 1825, Australia. Tel.: +61 2 9351 9010; fax: +61 2 9351 9601. E-mail address: [email protected] (M. B. Pinheiro).
Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article.
Received August 13, 2014
Received in revised form November 25, 2014
Accepted December 04, 2014
