Smoking is a risk factor for multiple sclerosis.
Iftah
I
Biran
Israel
I
Steiner
D015984:Causality; D006801:Humans; D009103:Multiple Sclerosis / Q000453:epidemiology* / Q000209:etiology; D015995:Prevalence; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology*