FILE - This May 16, 2012 file photo shows actress Valerie Harper at the Friars Club Roast of Betty White in New York. Harper has agreed to make a first-person account of her battle with terminal cancer for NBC News. The network said that Meredith Vieira will be host of the documentary, which will air in prime-time. No airdate was set. (AP Photo/Charles Sykes, File)

Associated Press
FILE - This May 16, 2012 file photo shows actress Valerie Harper at the Friars Club Roast of Betty White in New York. Harper has agreed to make a first-person account of her battle with terminal cancer for NBC News. The network said that Meredith Vieira will be host of the documentary, which will air in prime-time. No airdate was set. (AP Photo/Charles Sykes, File)
FILE - This May 16, 2012 file photo shows actress Valerie Harper at the Friars Club Roast of Betty White in New York. Harper has agreed to make a first-person account of her battle with terminal cancer for NBC News. The network said that Meredith Vieira will be host of the documentary, which will air in prime-time. No airdate was set. (AP Photo/Charles Sykes, File)
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