Old age is listed as the third most frequent cause of death.

The high-voltage third rail has been another frequent cause of death.

Contact with overhead wires is a frequent cause of injury or death.

It is the single most frequent cause of hospitalization for Americans aged 65 and older.

In women, tightlacing has been held to be a frequent cause.

The second most frequent cause of harm is pesticide poisoning.

It is indeed a worrying and all too frequent cause of occupational health problems.

Rheumatism is the second most frequent cause of visits to the doctor.

In adults over 40, cancer of the colon becomes an increasingly frequent cause.