Study type:
Epidemiological study
(observational study)
Physical trauma and family history of neurodegenerative diseases in amyotrophic lateral sclerosis: a population-based case-control study
epidem.
By:
Cruz DC, Nelson LM, McGuire V, Longstreth Jr WT
Published in: Neuroepidemiology 1999; 18 (2): 101-110
Exposure