WASHINGTON (AFP) - US Secretary of State Hillary Clinton will return to work on Monday after a month-long absence caused by a series of health scares, including a blood clot in her head, the State Department said. Clinton has been sidelined for four weeks, since she was taken ill on her return from a trip to Europe on December 7, and briefly hospitalized for a few days in NY last week. But the State Department’s schedule for the week ahead released late Sunday revealed the top diplomat will meet at 9:15 am (1415 GMT) on Monday with her assistant secretaries in Washington. The talks will be closed to the press. A series of other meetings is planned through the week, including talks at the White House on Tuesday with Leon Panetta and National Security Advisor Tom Donilon.