With the # of people affected by this epidemic, I'm surprised you don't know some directly (currently using or recovering) that you could ask (ask if they are comfortable talking about it first -- recovery can be very difficult and talking about the experience unguided can bring back the impulse to use).
I personally know 4 people from different parts of my life who are currently recovering from the damage it didi to them and their relationships. I guarantee you probably know someone.