Supplemental Digital Content is available in the text.
School of MedicineUniversity of QueenslandHerston, Queensland, Australiaguoyuming@yahoo.cn
School of MedicineUniversity of QueenslandHerston, Queensland, Australia
School of Population HealthUniversity of QueenslandHerston, Queensland, Australia
School of Public Health and Social WorkInstitute of Health and Biomedical InnovationQueensland University of TechnologyKelvin Grove, Queensland, Australia
Supported by the National Health and Medical Research Council of Australia (nos 511013, 553043, and APP1025300).
Supplemental digital content is available through direct URL citations in the HTML and PDF versions of this article (www.epidem.com). This content is not peer-reviewed or copy-edited; it is the sole responsibility of the author.