The defensive midfielder started his professional career with Argentine giants River Plate in 2003 and spent a year in Brazil with Corinthians before making the move to the Premier League, Goal.com reported.
In 58th minute, Giovani Lo Celso pulled the ball back for captain Messi to sidefoot low into the net, but the goal was eventually disallowed by the Brazilian officials for a foul by Gonzalez at the beginning of the move
"This chronic subdural hematoma was successfully evacuated. Diego tolerated the surgery very well. He is awake. Everything is fine," CNN quoted Luque as saying.
The pause means the online enrollment system has been closed for the 60,000-patient clinical trial while the independent patient safety committee is convened.