What more idiomatic in the following context, causes of or causes for?
I want to put a title in a work: causes of/ for this problem
Now, I know that I can put simply: "causes" and no more needed. But I'm asking also for the text itself where I can't just use the word causes but I have to elucidate and say: "The causes of/for this problem are: 1, 2, 3 etc.)