VIENNA, Dec 10 (Reuters) - Non-OPEC oil producers agreed on Saturday to reduce their output by a combined 562,000 barrels per day as part of a global deal with the Organization of the Petroleum Exporting Countries, two OPEC sources told Reuters.

(Reporting by Alex Lawler and Rania El Gamal; Editing by Dale Hudson) ((Dmitri.Zhdannikov@thomsonreuters.com;))