- Correspondence to Dr Juanita A Haagsma, Institute for Health Metrics and Evaluation, University of Washington, Seattle, WA, USA;
- Received 22 March 2015
- Revised 13 July 2015
- Accepted 30 July 2015
- Published in print 1 February 2016.
- Published online 21 January 2016.
- Published first 3 December 2015.
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