A cause for concern?
McCrory
P
P
D015331:Cohort Studies; D006259:Craniocerebral Trauma / Q000150:complications* / Q000209:etiology; D006801:Humans; D016472:Motor Neuron Disease / Q000209:etiology*; D012189:Retrospective Studies; D012307:Risk Factors; D012916:Soccer / Q000293:injuries*