Many different diseases,conditions and injuries can cause chronic pain, from back problems to burns.

VOA: special.2009.02.10

She studied the problems of child-rearing, personality and culture in different societies.

VOA: special.2010.01.17

This results in problems in different parts of the body.

VOA: special.2009.01.06

But Secretary Gates has a different view, saying the political problems in Afghanistan go beyond allegations of fraud in the election,and include widespread corruption.

VOA: standard.2009.10.20

Many different government agencies, civil-military partnerships and,again,a comprehensive approach to these problems is the answer,".

VOA: standard.2009.09.23