The study involved about 1,000 people studied over six years.
Researchers studied 3,718 people 65 and older over six years.
We've studied populations all over the world since the turn of the last century.
Jim didn't say nothing for about five minutes, but set there studying over it.
It will be a real chance to learn in a practical way many of the things we have been studying over the last few months.
Answer up prompt now - don't stop to study over it.
Security Council members will study the draft resolution over the next few days.
Her dark eyes studied me over the rim of the glass.
He studied my face over the rim of his glass.
She spent the next two years studying religions all over the world.