title: Emerging importance of certification: Volume, outcomes, and regionalization of care.
authors.forename: Stanley K
authors.initials: SK
authors.lastname: Frencher
authors.forename: Joan J
authors.initials: JJ
authors.lastname: Ryoo
authors.forename: Clifford Y
authors.initials: CY
authors.lastname: Ko
mesh_terms: D002568:Certification; D006276:Health Facility Size / Q000706:statistics & numerical data*; D006801:Humans; D017063:Outcome Assessment, Health Care; D012040:Regional Health Planning; D013514:Surgical Procedures, Operative / Q000706:statistics & numerical data*