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Journal
Acta Obstet Gynecol Scand
Volume
94
Issue
11
Pages
1215-22
Publication year
2015
Suggested citation
Correia S, Rodrigues T, Montenegro N, Barros H. Critical evaluation of national vital statistics: the case of preterm birth trends in Portugal. Acta Obstet Gynecol Scand. 2015; 94(11): 1215-22.