2016- Adjunct Distinguished University Professor, Founding Dean ofGlobal Health Institute, Professor of School of Public Health, Xi’an Jiaotong University

2016- John & Janice Fisher Endowed Chair of Wellness; Associate Director, Fisher Institute of Health and Well-being; Director, Systems-Oriented Global Childhood Obesity Intervention Program; Professor, Department of Nutrition and Health Sciences, College of Health, Ball State University

2016- Adjunct Distinguished Professor,School of Public Health, Tianjin Medical University

2014-2016Professor, Department of Epidemiology and Environmental Health, School of Public Health and Health Professions; Director, Systems-oriented Global Childhood Obesity Intervention Program; Clinical Professor, Department of Pediatrics, School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York (SUNY), Buffalo

2015- AdjunctProfessor, Department of Community Health and Health Behavior, School of Public Health and Health Professions, UB-SUNY

2013-2014Professor and Chair, Department of Epidemiology and Environmental Health, School of Public Health and Health Professions; Clinical Professor, Department of Pediatrics, School of Medicine and Biomedical Sciences, UB-SUNY

2013- Adjunct Professor,Bloomberg School of Public Health, School of Medicine, Johns Hopkins University

2007-2013 Associate Professor,Department of International Health, Department of Epidemiology (joint appointment), Bloomberg School of Public Health, Johns Hopkins University

2011-2013 Associate Professor,Department ofHealth, Behavior and Society(joint appointment), Bloomberg School of Public Health, Johns Hopkins University

2011-2013 FoundingDirector, Johns Hopkins Global Center on Childhood Obesity--Where Systems Science Meets Public Health,Johns Hopkins University, Baltimore

2013- present Adjunct Associate Professor,Department of Medicine, School of Medicine, Johns Hopkins University

2012- present Adjunct Associate Professor,Department of Psychiatry and Behavioral Sciences, School of Medicine, Johns Hopkins University

2010- present Adjunct Professor,School of Public Health, Fudan University

2009- present Adjunct Professor,School of Public Health, Peking University

2009- present Adjunct Professor,School of Medicine, Xi’an Jiaotong University

2004-2007 Assistant Professor,Department of International Health Human Nutrition Program,Department of Epidemiology (joint appointment), Bloomberg School of Public Health, Johns Hopkins University

2002 June-August, Visiting Scholar, School of Public Health, Harvard University

2001-2004 Assistant Professor,Department of Human Nutrition, University of Illinois at Chicago