He with Sexton during his time with Racing 92.
Jonathan Sexton has hit back at a French doctor who claimed the Ireland captain had suffered 30 career concussions.
Dr. Jean-Louis Chermann worked with Sexton during his time with Racing 92.
Sexton is undergoing the return-to-play protocols ahead of Sunday’s Six Nations meeting with France after a knock to the head in Cardiff.
But the out-half has reacted with dismay at Dr. Chermann’s claims.
Laois SHC: The Harps Book First Semi-Final In 14 Years
Cliodhna O'Connor Named Westmeath Ladies Football Manager
Offaly SHC: Belmont Relishing Semi-Final Encounter
Westmeath SHC: Raharney To Turn Focus To Upcoming Semi-Final
Offaly Pick Up Two All Star Hurling Nominations
I Want To Play Football Again - Lily Agg
Laois SHC: Rosenallis Make First Semi-Final In Six Years
Final Places Decided In Offaly And Westmeath LGFA Championship
Offaly SHC: St Rynaghs Seal Semi-Final Place
Leinster Champions Westmeath Pick Up Four All Star Nominations
Athlone Town Continue Good Form In First Division
Shane Lowry Ends Positive Week At Wentworth With 68
Hurling Round Up: Semi-Final And Final Places Confirmed Across The Midlands
Ireland Let Lead Slip In Opening WXV Global Series Game
Offaly Soccer Club Granted Planning Permission For Facility Expansion
Athlone Town Looking To Move Step Closer To Premier Division Title
Ireland Team Named Ahead Of USA Test
Positive Starts At BMW PGA Championship For Shane Lowry And Rory McIlroy