No abstract available
MeSH terms
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Female
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Humans
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Meta-Analysis as Topic
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Nifedipine / pharmacology
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Nifedipine / therapeutic use*
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Obstetric Labor, Premature / prevention & control*
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Pregnancy
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Reproducibility of Results
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Research Design
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Ritodrine / pharmacology
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Ritodrine / therapeutic use*
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Sample Size
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Tocolytic Agents / pharmacology
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Tocolytic Agents / therapeutic use*
Substances
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Tocolytic Agents
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Ritodrine
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Nifedipine