Previous research has shown a clear association between obesity and breast cancer in post-menopausal women.
This implied a "clear association between pain, perversity and sexual pleasure".
They found a clear association between non-European immigration and employment in the UK.
There was no clear association between migraine and dementia.
Only recently, a clear association between migraine and cardiovascular disease became evident [88, 89, 92].
Many studies show that there is a clear association between headache and sleep disorders [43, 44].
Mallin and Coworkers have established a clear association between rainfall, SPM and BOD5.
Previous studies have not detected a clear association between SSTR2 expression and oligodendroglioma component.
So there's a clear association between criminality and violence and fractured relationships particularly with parents.
More rigorous studies have not demonstrated a clear association between diet and lung cancer risk.
In this study, there was also a clear association between crouched posture and diagonality.
