title: Commentary: biology vs. methodology in investigating causal pathways for infant mortality.
authors.affiliation: Department of Pediatrics, McGill University Faculty of Medicine, Montreal, Canada. michael.kramer@mcgill.ca
authors.forename: Michael S
authors.initials: MS
authors.lastname: Kramer
mesh_terms: D006801:Humans; D007226:Infant Mortality / Q000639:trends*; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D008954:Models, Biological; D015233:Models, Statistical; D012907:Smoking / Q000009:adverse effects; D014481:United States / Q000453:epidemiology