Changes to 2003/153/EC: Commission Decision of 3 March 2003 concerning protection measures in relation to strong suspicion of avian influenza in the Netherlands (notified under document number C(2003) 735)
EU Decision 2003/153
Made by 2003/156/EC: Commission Decision of 6 March 2003 amending Decision 2003/153/EC concerning protection measures in relation to avian influenza in the Netherlands (notified under document number C(2003) 767)
From legislation.gov.uk's record of changes, the official one: see it there.