title: Invited commentary: Barker meets Simpson.
authors.affiliation: Biostatistics Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA. weinberg@niehs.nih.gov
authors.forename: C R
authors.initials: CR
authors.lastname: Weinberg
mesh_terms: D000328:Adult; D001724:Birth Weight / Q000502:physiology*; D001794:Blood Pressure / Q000502:physiology*; D001835:Body Weight / Q000502:physiology*; D015984:Causality; D003198:Computer Simulation; D015986:Confounding Factors, Epidemiologic; D006801:Humans; D008297:Male; D015233:Models, Statistical