DOI:
10.1055/s-00030576
Revista Brasileira de Ginecologia e Obstetrícia / RBGO Gynecology and Obstetrics
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References
Norman JE, Mackenzie F, Owen P, Mactier H, Hanretty K, Cooper S. et al.
Progesterone for the prevention of preterm birth in twin pregnancy (STOPPIT): a randomised, double-blind, placebo-controlled study and meta-analysis.
Lancet 2009;
373 (9680): 2034-2040
DOI: 10.1016/S0140-6736(09)60947-8.
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