1. Mennonite College of Nursing, Illinois State University, Normal, IL, USA
2. Department of Integrative Biomedical & Diagnostic Sciences, Oregon Health & Science University School of Dentistry, Portland, OR, USA
3. Department of Oral Biology Department, Rutgers School of Dental Medicine, Department of Epidemiology and Statistics, Rutgers School of Public Health, Department of Epidemiology, Dartmouth College, Hanover, NH, USA