When Ledgard's colleagues come to his mansion to perform the operation, one of them arrives in the Mercedes-Benz E class coupe which came into production in 2010. But the operation took place in 2006. Vicente wrote after the operation dates from 2006 on the wall of his room.
When Doctor Robert Ledgard is preparing the artificial skin for the surgery he grabs the scissors with his thumb and index fingers, every experienced surgeon uses thumb and ring finger for using that tool.
When Doctor Robert Ledgard and his colleague are preparing themselves for the surgery they wear sterile gloves and then tie each other clothes from the back, that is considered non sterile, so they will contaminate the surgery.
When Vera comes to the clothes shop in a taxi, the taxi is very clearly a Ford C-Max. However, in the next shot, when the reflection of the car is visible in the window pane as it drives away, it's a Volkswagen Jetta.