'This is what really inspires me: sadness.' - French doctors warn Johnny Sexton he shouldn't play in Ireland's next Six Nations clash

France have upped the ante ahead of Sunday's Six Nations clash against Ireland after two French neurosurgeons specialising in concussion, including the doctor who stood down Johnny Sexton for 12 weeks in late 2014 on the back of concussion-related issues, warned the captain against the risks of returning too soon after his latest head injury.