European Factors to Watch-Shares seen up as Fed defends stimulus

LONDON, Feb 27 (Reuters) - European stock index futures were slightly higher on Wednesday after markets fell sharply in the previous session, helped by the U.S. Federal Reserve's defence of its stimulus programmes for the economy, although concerns over the euro zone may limit gains. The March futures contract for the euro zone's blue-chip Euro STOXX 50 index was up by 0.7 percent, while futures contracts for Germany's DAX and France's CAC were both up by around 0.6 percent. U.S. stock