By Jeremy Gaunt LONDON (Reuters) - The euro zone and its constituent parts will report fourth quarter economic growth numbers at the end of the week, offering policy makers at the European Central Bank a needed snapshot of the bloc's underlying strength. There has been general improvement but a growing disparity between Germany and France, the currency union's largest economies. Reuters polls suggest euro zone GDP will come it at 0.2 percent quarter on quarter for an year-on-year increase of just 0.4 percent. "However, Europe's economic fundamentals are fragile, with deep divisions in performance among nations." The ECB sat on its hands last week but gave a fairly clear steer that action could be taken next month if new internal forecasts show a further deterioration in inflation - falling so low as to trigger some concerns about deflation - and growth.{br}{br}View the Entire Article{br}