anchor.diff:  "871","DE_E_671_687_IDENTIFIER",\N,"687"
   "872",\N,"DE_E_685_688_IDENTIFIER","688"
   "873","DE_E_663_689_IDENTIFIER",\N,"689"
  -"874","SCG_ID",\N,"690"
  +"874",\N,"DSPR_ID","690"
   "875",\N,"REPORT_ID","691"
   "876","SOURCE_ID",\N,"692"
   "883","DEIDENTIFIED_REPORT_ID",\N,"1178"
  
positive.code: "846","REPORT_ID",\N,"1173"
  "847","REPORT_ID",\N,"1174"
  "848","REPORT_ID",\N,"1175"
  "857","SCG_ID",\N,"1176"
  "858",\N,"REPORT_ID","675"
  "859",\N,"DE_E_674_676_IDENTIFIER","676"
  "860",\N,"REPORT_ID","677"
  
negative.code: "532",\N,"DE_E_379_263_IDENTIFIER","1146"
  "533",\N,"DE_E_379_299_IDENTIFIER","1147"
  "534",\N,"DE_E_379_335_IDENTIFIER","1148"
  "535","DSPR_ID",\N,"1149"
  "536","SITE_ID",\N,"380"
  "537","COLLECTION_PROTOCOL_EVENT_ID",\N,"381"
  "538","ISPR_ID",\N,"382"
  "539",\N,"SPECIMEN_COLL_GROUP_ID","383"
  "540","SPECIMEN_COLL_GRP_ID","IDENTIFIER","384"
  "541","SPECIMEN_COLL_GRP_ID","IDENTIFIER","385"
  