Global burden of pain and global pain policy—creating a purposeful body of evidence

aCentre for Education and Research on Ageing, Concord Clinical School, University of Sydney, Sydney, New South Wales, Australia bMenzies Centre for Health Policy, Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia *Corresponding author. Address: Medical Education Centre, University of Sydney Concord Clinical School, Concord Hospital Building B26, Hospital Rd, Concord, NSW 2139, Australia. Tel.: (61 2) 9767 6842. E-mail address: email protected (F.M. Blyth). Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article.