1. Oklahoma Tobacco Research Center, Oklahoma City, OK, USA
2. Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
3. Psychology Department, Center for Pediatric Psychology, Oklahoma State University, Stillwater, OK, USA
4. Bradley/Hasbro Children’s Hospital Research Center, Rhode Island Hospital, Providence, RI, USA
5. Department of Psychiatry and Human Behavior, Alpert Medical School, Brown University, Providence, RI, USA