LONDON, ENGLAND - JULY 24:  Chris Gard and Connie Yates, the parents of terminally ill baby Charlie Gard, speak to the media following their decision to end their legal challenge to take him to the U.S for experimental treatment, at The Royal Courts of Justice on July 24, 2017 in London, England. The parents of terminally-ill baby Charlie Gard have ended their legal challenge to take him to the U.S for treatment after an American doctor said it was too late to give him nucleoside therapy.  (Photo by Carl Court/Getty Images)