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History
- Accepted October 12, 2010
- Published online January 1, 2011.
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- previous version (December 6, 2010 - 04:01).
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Copyright © 2011 by the American Academy of Pediatrics
Author Information
- aMaternal and Child Health Unit, Faculty of Medicine, Federal University of Rio Grande, Rio Grande, Brazil;
- bDepartment of Pediatrics and Research and Development Unit, Ostersund Hospital, Ostersund, Sweden;
- cDepartment of Health Sciences, Mid Sweden University, Ostersund, Sweden; and
- dInstitute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, Massachusetts