| http://www.w3.org/ns/prov#value | - Still, the No. 1 risk factor remains aging, which is why cancer kills more people today than it ever has, with public health measures such as sanitation having dramatically reduced infectious disease deaths.There are hundreds of different types of cancer, most of which are named for the organ or type of cell in which they start.We also know that not all tumours are cancerous ??? they can be malign
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