What is the statute of limitations for personal injury within Colorado?

I was in a vehicle accident approx. 7 years ago in Colorado and am experiencing medical issues as a result of the injury to my d¨Ścolletage. I never signed the medical release form as directed by doctor. How long do I have to bring a suit against the insurance company in the state of Colorado? The personality who ran me into the concrete medsian resided in Oklahoma at the time.
I am almost positive it is three years.

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