Breast cancer and breastfeeding: collaborative reanalysis of individual data from 47 epidemiological studies in 30 countries, including 50302 women with breast cancer and 96973 women without the disease.
BACKGROUND: Although childbearing is known to protect against breast cancer, whether or not breastfeeding contributes to this protective effect is unclear. METHODS: Individual data from 47 epidemiological studies in 30 countries that included information on breastfeeding patterns and other aspects o...
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| Médium: | Journal article |
| Jazyk: | English |
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2002
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