title: Critically important proposed Stark changes to physicians.
authors.forename: Sidney S
authors.initials: SS
authors.lastname: Welch
authors.forename: Amy J
authors.initials: AJ
authors.lastname: McCullough
mesh_terms: D006801:Humans; D007753:Laboratories / Q000331:legislation & jurisprudence*; D010820:Physicians / Q000331:legislation & jurisprudence*; D011331:Private Practice / Q000331:legislation & jurisprudence*; D012017:Referral and Consultation / Q000331:legislation & jurisprudence*; D014481:United States