Finance ministers and central bankers from the Group of 20 countries met in Mexico City for two days of talks on the eurozone debt crisis, improving regulation of financial markets, and the US deficit. US Treasury Secretary Timothy Geithner and European Central Bank President Mario Draghi are among several who have cancelled their attendance at the two-day meeting, which brings together the world\'s top 20 developed and emerging economies, according to a report of DPA. It is the last such gathering that Mexico will host before handing over the rotating presidency of the group to Russia for 2013.