++++ TAX PROVISIONS - HARMONIZATION OF LAWS - TURNOVER TAXES - COMMON SYSTEM OF VALUE-ADDED TAX - EXEMPTIONS PROVIDED FOR BY THE SIXTH DIRECTIVE - EXEMPTION IN RESPECT OF THE PROVISION OF MEDICAL CARE IN THE EXERCISE OF THE MEDICAL AND PARAMEDICAL PROFESSIONS - SUPPLY OF GOODS DISSOCIABLE FROM THE SERVICE - TAXABLE NATURE ( COUNCIL DIRECTIVE 77/388/EEC, ART . 13 A ( 1 ) ( C ) )