title: Time to tackle unwarranted variations in practice.
authors.affiliation: Dartmouth Institute of Health Policy and Clinical Practice, 35 Centerra Parkway, Lebanon, NH 03766, USA. john.wennberg@dartmouth.edu
authors.forename: John E
authors.initials: JE
authors.lastname: Wennberg
mesh_terms: D003695:Delivery of Health Care; D006801:Humans; D010818:Practice Patterns, Physicians'; D006113:United Kingdom; D014481:United States