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02/27/1998 at 12:00 AM EST

Phyllis Diller, with a pacemaker, as she recovers from a "mild" heart attack she suffered last month, her personal manager said Tuesday. The comedienne, 81, has been admitted under an assumed name to a Los Angeles hospital while she recovers, Milt Suchin said. He said Diller's condition was improving, and he described her as upbeat.