Joan Rivers remains hospitalized three days after going into cardiac arrest at a doctor's office in New York City. The Mount Sinai Hospital said Sunday that it had no updates to release on the 81-year-old comedian's health. Daughter Melissa Rivers said Friday that she was in serious condition. A spokeswoman for Joan Rivers didn't immediately respond to messages Sunday. She was taken to Mount Sinai Hospital on Thursday, a day after she spoke at an employee event at Time Inc. in New York.
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