What Is The Cause And Treatment For Premature Ejaculation?

Good morning Doc, i am 35 years old, i have a problem every sex contact. When i getting a sex contact with my wife, when i insert my penis, in just a second my sperm is come out. Thats why i and my wife is not satisfy. I want to make longer time, but what can i do. Pls. Doc advice me. Thank you very much. Please leave your message in my e mail YYYY@YYYY