Changes made by 2004/63/EC: Commission Decision of 23 December 2003 amending Decision 2003/467/EC as regards the declaration that certain provinces of Italy are free of bovine brucellosis and enzootic bovine leukosis (notified under document number C(2003) 5063)
EU Decision 2004/63
Made to Commission Decision of 23 June 2003 establishing the official tuberculosis, brucellosis, and enzootic-bovine-leukosis-free status of certain Member States and regions of Member States as regards bovine herds (notified under document number C(2003) 1925) (2003/467/EC)
From legislation.gov.uk's record of changes, the official one: see it there.