It’s official: Allegheny Health to affiliate with Heritage Valley Pittsburgh Post-GazetteAHN signs deal to pull Heritage Valley hospitals into its network TribLIVE.com‘A monumentally historic day:’ AHN, Heritage Valley to combine The Business JournalsHeritage Valley hospitals joining Allegheny Health Network through affiliation agreement Beaver County TimesAllegheny Health Network and Heritage Valley Health System Sign Affiliation Agreement PR Newswire