Joy Baker, the wife of former White House Chief of Staff Howard Baker, has checked into the Mayo Clinic said a hospital spokesman.

"She is a patient at Mayo, but because of our policy of patient confidentiality we won't release any more information," said Mary Ellen Landwehr, the Rochester, Minn., clinic spokeswoman.On July 1, Howard Baker stepped down as chief of staff and said he would return to his home in east Tennessee where his wife and stepmother were in poor health.

Mrs. Baker, 59, the daughter of former Senate Minority Leader Everett Dirksen, entered the clinic Wednesday, said Landwehr.

She was discharged earlier Wednesday.