FT. LAUDERDALE, FL--(Marketwired - May 9, 2017) - Cardiff International, Inc. (OTCQB: CDIF) and MedicaMetrix®, Inc. (Private; "MedicaMetrix") announced today they have signed a Letter of Intent agreement under which MedicaMetrix will merge into Cardiff International as its subsidiary, MedicaMetrix, Inc., in an all-stock transaction valued at approximately $6 million.