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<http://webisa.webdatacommons.org/348326495>	<http://www.w3.org/ns/prov#value>	"NEW YORK (Reuters Health) - Physician performance programs, which reward top-tier doctors, could widen healthcare disparities, researchers warned on Tuesday.In a study of several hospitals and community centers in Eastern Massachusetts, they found patient characteristics such as race and insurance coverage had a large influence on how high doctors ranked.Those with the best ratings had fewer minor" .
<http://webisa.webdatacommons.org/prov/476811072>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/348326495> .