Caluza Triangle - Caluza vs Brown defined what is necessary for service connection see COVA– CALUZA V. BROWN–TOTAL RECALL This has to be MEDICALLY Documented in your records: Current Diagnosis. (No diagnosis, no Service Connection.) In Service Event or Aggravation. Nexus (link- cause and effect- connection) or Doctor's Statement close to: "The Veteran's (current … [Read more...] about Caluza Triangle defines what is necessary for service connection.