IMPORTANCE: Preterm birth has been difficult to study and prevent because of its complex syndromic nature. OBJECTIVE: To identify phenotypes of preterm delivery syndrome in the Newborn Cross-Sectional Study of the INTERGROWTH-21st Project. DESIGN, SETTING, AND PARTICIPANTS: A population-based, multiethnic, cross-sectional study conducted at 8 geographically demarcated sites in Brazil, China, India, Italy, Kenya, Oman, the United Kingdom, and the United States. A total of 60,058 births over a ...Expand abstract
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The distribution of clinical phenotypes of preterm birth syndrome: implications for prevention.
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