| http://www.w3.org/ns/prov#value | - More sophisticated approaches have been described that more specifically describe the nature of the family history [40,41], using for example such variables as number and types of relatives affected with breast cancer (plus the ages at which they developed breast cancer), special risk factors such as BRCA1 and BRCA2 gene mutations and family history of cancers at other sites.The approach used for
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