MADRID| By Francisco López | Spanish banks are the most closely examined in the world, but it does not seem to be enough for supervising institutions. The ECB has urged them to undergo a new and comprehensive assessment of their exposure to real state sector before the European banking industry’s Asset Quality Review previous to the stress tests that will take place by the end of the year. The central bank has rejected that Spain’s entities use 2012’s review by audit firm Oliver Wyman. Even though ,they reckon, that would save money and time.