At the same time, it is necessary to note that the mortality rate for almost all types of cancer in China’s elderly population (over 70 years of age) has shown an increasing trend over the past three decades. 3.3.
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At the same time, it is necessary to note that the mortality rate for almost all types of cancer in China’s elderly population (over 70 years of age) has shown an increasing trend over the past three decades. 3.3.