Wearing narrow, pointed shoes is a major contributory factor.
The worsening of the crisis in Russia was a major contributory factor in this development.
It added: "We believe that the new fee regime is a major contributory factor".
But a major contributory factor appears to be the NHS 111 helpline.
Fatigue is a major contributory factor to accidents and slower response times when there is an incident.
"The Paris terror attacks was a major contributory factor, accounting for more than 14m unique browsers alone," he said.
Bonaparte's genius for war and, increasingly, his addiction to it as his central strategy was a major contributory factor.
Sub-standard housing is widely recognised to be a major contributory factor to poor health and we see its detrimental effects every day.
"There is no doubt from talking to teachers that government policy is a major contributory factor to this growing problem," she said.
At his inquest, the coroner said it would be wrong to suggest he had killed himself simply because of his debt, but it was a major contributory factor.
