National, regional, and worldwide estimates of preterm birth rates in the year 2010 with time trends since 1990 for selected countries: a systematic analysis and implications
Author:
Hannah Blencowe,Simon Cousens,Mikkel Z Oestergaard,Doris Chou,Ann-Beth Moller,Rajesh Narwal,Alma Adler,Claudia Vera Garcia,Sarah Rohde,Lale Say,Joy E Lawn
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