The German Football League, the DFL, has a protocol for head injuries in the Bundesliga and the 2. Bundesliga. The form has signature lines for the club, the head coach, the person responsible for sport and the team doctor. The examination and treatment of a player on the pitch may take up to three minutes. Die Entscheidung obliegt allein dem/der Mannschaftsarzt/-ärztin. The decision rests with the team doctor alone. Trainer/-in, Schiedsrichter/-in und Spieler dürfen die Beurteilung und Entscheidung des Arztes/der Ärztin nicht beeinflussen. The coach, the referee and the player may not influence the doctor’s assessment and decision. The player may go on only if the doctor expressly confirms that he is able to. If a concussion cannot be ruled out, he takes no further part in the match.