Chris Froome's victory at the 2017 Vuelta a Espana came weeks after his fourth Tour de France title. Jaime Reina / AFP
Chris Froome's victory at the 2017 Vuelta a Espana came weeks after his fourth Tour de France title. Jaime Reina / AFP

Chris Froome 'followed doctor's advice' after 'adverse finding' in Vuelta a Espana doping test