Commission Regulation (EC) No 1231/2006 of 16 August 2006 amending Annexes I and II to Council Regulation (EEC) No 2377/90 laying down a Community procedure for the establishment of maximum residue limits of veterinary medicinal products in foodstuffs of animal origin, as regards ceftiofur and polyoxyethylene sorbitan monooleate and trioleate (Text with EEA relevance)