New England Journal of Medicine · 2007 · 1.1K citations · 21 references
In women with a short cervix, treatment with progesterone reduces the rate of spontaneous early preterm delivery. (ClinicalTrials.gov number, NCT00422526 [ClinicalTrials.gov].).
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Choice Reviews Online · 1990 · 35.6K citations
The Length of the Cervix and the Risk of Spontaneous Premature Delivery
Jay D. Iams, Robert L. Goldenberg, A. Das et al. · New England Journal of Medicine · 1996 · 1.9K citations · Full text