title: Context in organizational groups: the case of hospital clusters.
mesh_terms: D002391:Catchment Area, Health; D006302:Health Services Research; D006742:Hospital Bed Capacity; D006752:Hospital Planning; D006764:Hospitals, Community; D006784:Hospitals, Teaching; D006801:Humans; D007373:Interinstitutional Relations; D013029:Space-Time Clustering; D014481:United States