1. Department of Health Administration and Policy, College of Public Health, George Mason University, Fairfax, VA, USA
2. School of Nursing, Johns Hopkins University, Baltimore, MD, USA
3. Department of Community Health Systems, School of Nursing, University of California, San Francisco, CA, USA
4. Chinese Culture and Community Service Center, Inc, Gaithersburg, MD, USA
5. Department of Social Work, College of Public Health, George Mason University, Fairfax, VA, USA