Switzerland's Nations League Finals squad does not include Arsenal's Stephan Lichtsteiner, who has barely played in 2019.
Fernando Santos has confirmed Andre Silva was deemed unfit by Portugal's medical staff, ruling him out of the Nations League Finals.
FIFPro vice-president Francis Awaritefe said changes must be made to the treatment of head injuries before a player dies.
Michel D'Hooghe – the chairman of FIFA's medical committee – played down the idea of independent doctors as concussion dominates headlines.
Newcastle United defender Fabian Schar suffered a concussion playing for Switzerland, prompting Headway to question why he could play on.
Xherdan Shaqiri has been forced to withdraw from Switzerland's opening Euro 2020 qualifiers.
England have been drawn against Netherlands in the semis of the inaugural Nations League Finals and manager Gareth Southgate cannot wait.
Switzerland will be without Roman Burki for the time being, after the Borussia Dortmund goalkeeper said he is to concentrate on club life.
Portugal will fancy their chances of reaching the Nations League final after being drawn with Switzerland, avoiding England and Netherlands.
Roberto Martinez rued Belgium's performance after their defeat to Switzerland in the Nations League.