Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleOverview and commentary.AuthorsPhilip SPublicationHealth services research, 2006, Vol 41, Issue 3 Pt 2, p991ISSN0017-9124Publication typearticleDOI10.1111/j.1475-6773.2006.00516.x