ELECTRO-MEDICAL APPARATUS FOR OZONE-OXYGEN THERAPY, INCLUDING APPARATUS FOR MIXING OZONE AND OXYGEN IN AN ADJUSTABLE RATIO; APPLICATORS FOR TRANSCUTANEOUS, SUBCUTANEOUS, INTRAMUSCULAR INTRAVENUOUS, INTRA-ARTERIAL OR RECTAL APPLICATION OF THE OZONE-OXYGEN MIXTURE; AND DEVICES FOR ELIMINATING EXCESSIVE OR RESIDUAL QUANTITIES OF OZONE