HEALTH PROBLEMS — PREGNANCY

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Schulz KF, Chalmers I, Hayes RJ, Altman DG (1995)
Empirical evidence of bias: dimensions of methodological quality associated with estimates of treatment effects in controlled trials. JAMA 273:408-412.

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Schulz KF, Chalmers I, Altman DG, Grimes DA, Doré CJ (1995)
The methodologic quality of randomization as assessed from reports of trials in specialist and general medical journals. Online Journal of Current Clinical Trials 4:197.

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Cochrane Pregnancy and Childbirth Group (1994)
The Cochrane Pregnancy and Childbirth Database. Oxford: Update Software

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Schulz KF, Chalmers I, Grimes DA, Altman DG (1994)
Assessing the quality of randomization from reports of controlled trials published in obstetrics and gynecology journals. JAMA 272:125-8.

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