title: HAPI FHIR - Data Model - Entity Relationship, does anyone have a link to an ERD model that is based on FHIR
body: <p>I'm looking for an ERD based on the fundamental concepts of HAPI FHIR.  I have access to a number of Data Architect tools (Erwin / PowerDesigner) and wanted to know if anyone has a model they can perhaps share or point to.</p>
  
  <p>Thanks</p>