For some partisans, there was a causal relationship at work.
But we still wonder to this day whether there was a causal connection between my husband's vigilance and the surgeon's collapse.
But, she added, "We could not distinguish whether the mobility was a causal risk factor or merely an intermediate variable of other risk factors".
In 1957, Leroy E. Burney announced that there was a causal relationship between smoking and lung cancer.
Back then there was a causal link between a recording's availability and the possibility of its influence.
The mayor was asked if there was a causal link between high tourism numbers and unbroken water mains.
He added that nearly every climate scientist actively publishing on the subject now agreed there was a causal link between carbon emissions and the sharp increase in intense and extreme weather events seen across the globe.
As a result, the CPS would simply not be able to prove beyond reasonable doubt that there was a causal link between Mr Tomlinson's death and the alleged assault upon him.
The Mt. Merapi volcano, located 30 40 km (19 25 mi) to the north of the earthquake, had been erupting at the same time, but geophysicists were unsure if there was a causal link between the two events.
Today the CPS said it could not bring a manslaughter charge because the conflicting medical evidence meant prosecutors "would simply not be able to prove beyond reasonable doubt that there was a causal link between Mr Tomlinson's death and the alleged assault on him".
At the outset of his Presidency in ways that he spoke about explicitly on Wednesday, in his speech before the Lincoln Memorial there was a causal relationship between those ideals: his election was the ultimate validation of the audacity at the heart of the simple creed that drove the civil-rights movement.
