| http://www.w3.org/ns/prov#value | - anywhere near being performed in people who do not have other options, Brown told Reuters Health.For instance, there are alternatives to new cardiac stents, pacemakers and defibrillators, such as drugs or other versions of the same devices, he pointed out.Yet only about four out of 10 approvals for these types of devices included studies that compared them to existing treatments.The FDA's Bolek s
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