1. School of Nursing, University of Pennsylvania, Philadelphia2School of Medicine, University of Pennsylvania, Philadelphia
2. School of Medicine, Indiana University, Indianapolis4School of Public Health, Shandong University, Jinan, China
3. Center for Outcomes Research, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
4. Nell Hodgson School of Nursing, Emory University, Atlanta, Georgia
5. School of Nursing, University of Pennsylvania, Philadelphia
6. Xinhua Hospital, MOE-Shanghai Key Laboratory of Children's Environmental Health, Shanghai Jiaotong University School of Medicine, China
7. National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, Maryland