(b) How can countries implement and monitor cost-effective approaches for the early detection of breast and cervical cancers, diabetes, hypertension and other cardiovascular diseases?
（b） 各国如何执行具有成本效益的办法并对其进行监测，以便早期甄别乳癌和宫颈癌、糖尿病、高血压及其他心血管疾病？