title: PPOs evolve, build on strengths of managed care.
authors.affiliation: ezab@ezab.net
authors.forename: Elaine
authors.initials: E
authors.lastname: Zablocki
mesh_terms: D000068:Accreditation; D003363:Cost Control; D019468:Disease Management; D006279:Health Maintenance Organizations; D006801:Humans; D020407:Internet; D011243:Preferred Provider Organizations / Q000191:economics / Q000592:standards / Q000706:statistics & numerical data / Q000639:trends*; D011785:Quality Assurance, Health Care; D014481:United States