BMC Pregnancy and Childbirth · 2013 · 28 citations · 24 references
Despite good quality evidence indicating the benefits of this practice especially for women with low calcium diets, less than 6% of a sample of women receiving antenatal care in Brazilian public clinics received a prescription for calcium supplements. There is an urgent need to upscale the implementation of this life-saving intervention.
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Recall bias in epidemiologic studies
Steven S. Coughlin · Journal of Clinical Epidemiology · 1990 · 1.3K citations