We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleAmbulatory care provided by office-based specialists in the United States.AuthorsValderas JM; Starfield B; Forrest CB; Sibbald B; Roland MPublicationAnnals of family medicine, 2009, Vol 7, Issue 2, p104ISSN1544-1717Publication typearticleDOI10.1370/afm.949