Author Contributions: Dr Saigal had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Saigal, Stoskopf, Streiner, Boyle, Pinelli, Paneth, Goddeeris.
Acquisition of data: Saigal, Stoskopf.
Analysis and interpretation of data: Saigal, Stoskopf, Streiner, Pinelli, Paneth, Goddeeris.
Drafting of the manuscript: Saigal, Stoskopf, Paneth.
Critical revision of the manuscript for important intellectual content: Stoskopf, Streiner, Boyle, Pinelli, Paneth, Goddeeris.
Statistical analysis: Stoskopf, Streiner, Pinelli.
Obtained funding: Saigal, Boyle, Goddeeris.
Administrative, technical, or material support: Saigal, Stoskopf.
Study supervision: Saigal, Stoskopf, Pinelli.
Financial Disclosures: None reported.
Funding/Support: This study was supported by grants MOP42536 from the Canadian Institutes of Health Research and 1 RO1 HD40219 from the National Institute of Child Health and Human Development.
Role of the Sponsor: The Canadian Institutes of Health Research and the National Institute of Child Health and Human Development did not participate in the design and conduct of the study, in the collection, analysis, and interpretation of the data, or in the preparation, review, or approval of the manuscript.
Acknowledgment: We thank the ELBW and NBW young adults and their parents for their generosity in participating in our ongoing studies for the last 25 years. We also thank Liz Merz, McMaster University, for her diligence in tracing the study participants; Lorraine Hoult, BA, and Mary Lou Schmuck, BA, McMaster University, for statistical analyses; Alaina Wilkins and Melissa Johnson, McMaster University, for data entry and accuracy checking; Diane Turcotte, McMaster University, for typing the manuscript; and Lynne Haverkos, MD, project officer of the National Institutes of Health, for her encouragement. We appreciate the support of the Department of Pediatrics and Children's Hospital, McMaster University, Hamilton, Ontario.