title: American Pediatric Society presidential address 1991. How many? How small?
authors.affiliation: Harvard Medical School, Children's Hospital, Boston, Massachusetts 02115.
authors.forename: M E
authors.initials: ME
authors.lastname: Avery
mesh_terms: D001723:Birth Rate; D003906:Developing Countries; D006801:Humans; D007231:Infant, Newborn; D011155:Population Control / Q000706:statistics & numerical data*