Extreme loneliness is a risk factor for X.
X and Y are important driving factors of Z.
X is almost as strong a risk factor for disability as Y.
X is generally seen as a factor strongly related to Y.
The mixing of X and Y exerts a powerful effect upon Z through…
Due to X and Y,inflowing surface water becomes more dense as it…
Loneliness can have profound health consequences for older people.
As a consequence of X,it appears that Y alone is not the causative factor of…
The study found that loneliness has twice the impact on early death as obesity does.
Possible cause and effect relationships expressed tentatively.
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There is some evidence that X may affect Y.
It is not yet clear whether X is made worse by Y.
This suggests a weak link may exist between X and Y.
The use of X may be linked to behavior problems in…
The human papilloma virus is linked to most cervical cancer.
The findings indicate that regular exercise could improve cognitive function in people at risk of…
X may have been an important factor in…
X may have contributed to the increase in…
X may have played a vital role in bringing about…
X may have been caused by an increase in…
In the literature,X has been associated with Y.
X in many cases may be associated with certain bacterial infections.
A high consumption of X could be associated with infertility.