Regional variation: only moderately interesting: a word of caution.
Anderson
H Vernon
HV
D017130:Angioplasty / Q000295:instrumentation* / Q000706:statistics & numerical data; D002340:Carotid Artery Diseases / Q000628:therapy*; D019992:Databases as Topic; D016894:Endarterectomy, Carotid / Q000706:statistics & numerical data; D054625:Healthcare Disparities / Q000706:statistics & numerical data; D006801:Humans; D006278:Medicare; D010818:Practice Patterns, Physicians'; D019984:Quality Indicators, Health Care; D012017:Referral and Consultation; D012111:Residence Characteristics / Q000706:statistics & numerical data; D015607:Stents / Q000706:statistics & numerical data; D013997:Time Factors; D014481:United States