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WASHINGTON, DC - JANUARY 16:  Physician to U.S. President Donald Trump Dr. Ronny Jackson speaks during the daily White House press briefing at the James Brady Press Briefing Room of the White House January 16, 2018 in Washington, DC. Dr. Jackson discussed the details of President TrumpÕs physical check-up from last week.  (Photo by Alex Wong/Getty Images)
WASHINGTON, DC - JANUARY 16:  Physician to U.S. President Donald Trump Dr. Ronny Jackson speaks during the daily White House press briefing at the James Brady Press Briefing Room of the White House January 16, 2018 in Washington, DC. Dr. Jackson discussed the details of President TrumpÕs physical check-up from last week.  (Photo by Alex Wong/Getty Images)

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CNN's Manu Raju reports.