Apparently, several french players at the 1998 World Cup had abnormally high crits according to a former team doctor.
http://www.lequipe.fr/Football/breves2010/20100825_082006_-des-analyses-de-sang-suspectes.html
http://www.lequipe.fr/Football/breves2010/20100825_082006_-des-analyses-de-sang-suspectes.html