2003/904/EC: Commission Decision of 15 December 2003 approving programmes for the purpose of obtaining the status of approved zones and of approved farms in non-approved zones with regard to viral haemorrhagic septicaemia (VHS) and infectious haematopoietic necrosis (IHN) in fish, and amending Annexes I and II to Decision 2003/634/EC (Text with EEA relevance) (notified under document number C(2003) 4727)