Search Results       Your search for [subject]Preferred provider organizations (Medical care) -- United States -- Econometric models returned 1 record.           Managed care and provider volume. by Feldman, Sarah; Cambridge: National Bureau of Economic Research, 1998. Subject: Managed care plan (Medical care) -- United States -- Econometric models; Preferred provider organizations (Medical care) -- United States -- Econometric models.          Add to Book Cart Relevance: 52.53%