1. a Graduate School of Public Health, San Diego State University , San Diego, USA
2. b Scripps Center for Integrative Medicine, Scripps Clinic , La Jolla, USA
3. c Graduate School of Public Health, San Diego State University , San Diego, USA
4. d Graduate School of Public Health, San Diego State University , San Diego, USA
5. e Department of Psychiatry , University of California at San Diego , San Diego, USA