++++ OFFICIALS - SOCIAL SECURITY - SICKNESS INSURANCE - PERSONS TREATED AS DEPENDENT CHILDREN - ENTITLEMENT TO BENEFIT - CONDITION - LACK OF COVER UNDER ANY OTHER PUBLIC SCHEME OF SICKNESS INSURANCE - CONDITION NOT LAID DOWN IN THE STAFF REGULATIONS - LEGALITY ( STAFF REGULATIONS ART . 72 ( 1 ); RULES ON SICKNESS INSURANCE FOR OFFICIALS OF THE EUROPEAN COMMUNITIES, ART . 3 ( 3 ) )