| http://www.w3.org/ns/prov#value | - Lumpectomy is a surgical procedure designed to remove a discrete lump (usually a tumour, benign or otherwise) from an affected woman or man???s breast. (University Health Network ??? Toronto, Ontario)?????? 1951 First ???cobalt bomb??? in the world used to deliver radiation therapy to cancer patients. (Lawson Health Research Institute ??? London, Ontario)??? 1952 First use of a device that determi
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