1. The Herbert Wertheim School of Public Health and Human Longevity Science, University of California, San Diego, California, USA.
2. San Diego State University School of Public Health, San Diego, California, USA.
3. Centre for Health Services Research, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia.
4. Crean College of Health and Behavioral Sciences, Psychology, Chapman University, Orange, California, USA.
5. Institute of Epidemiology and Health Care, University College, London, United Kingdom.