LONDON, ENGLAND - FEBRUARY 06: Prince William, Duke of Cambridge attends The Guild of Health Writers Conference with Heads Together at Chandos House on February 6, 2017 in London, England. (Photo by Eddie Mulholland-WPA Pool/Getty Images)
LONDON, ENGLAND - FEBRUARY 06: Prince William, Duke of Cambridge attends The Guild of Health Writers Conference with Heads Together at Chandos House on February 6, 2017 in London, England. (Photo by Eddie Mulholland-WPA Pool/Getty Images)