title: Commentary: Resolutions of the birthweight paradox: competing explanations and analytical insights.
authors.affiliation: Departments of Epidemiology and Biostatistics, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA. E-mail: tvanderw@hsph.harvard.edu.
authors.forename: Tyler J
authors.initials: TJ
authors.lastname: VanderWeele