Complex sentence: Attacks were seen to vary in duration from a few minutes to months in different individuals; they were associated with unsteadiness, nausea and vomitting Farmer, Thomas W. and Vernon M. Mustian.
Split into simpler sentences: Attacks were seen to vary in duration from a few minutes to months in different individuals. They were associated with unsteadiness, nausea and vomitting Farmer, Thomas W. and Vernon M. Mustian.