1. Penn State Tobacco Center of Regulatory Science, Department of Public Health Sciences, College of Medicine, Penn State University, Hershey, Pennsylvania, USA
2. Department of Biostatistics, University of Kansas Medical Center, The University of Kansas, Kansas City, Kansas, USA
3. Center for the Study of Children at Risk,
4. Department of Psychiatry and Human Behavior, and
5. Department of Pediatrics, The Warren Alpert Medical School of Brown University and Women and Infants Hospital, Providence, Rhode Island, USA
6. College of Public Health and Human Sciences, Oregon State University, Corvallis, Oregon, USA
7. Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
8. Department of Pathology and Laboratory Medicine, and
9. Department of Epidemiology, Brown University, Providence, Rhode Island, USA
10. Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA