In Avalon's defense: If you're dealing with a chronic health problem, you eventually come to a point where you've exhausted the good treatment options, the low hanging fruit. The only options left are risky and/or have effects you don't want. Worse, you might be dealing with providers who aren't as careful as you would like. Then, if you have problems, some future doctor will say, "Oh, it's too bad your doctor/nurse didn't take precautions."
At that point, it's really tempting to do nothing and hope the situation gets better. I've read a bunch of journal articles. My concerns are definitely warranted, but I've decided to take the leap and hope it works out. I will ask the doctor to work with me to prevent the recurrence of the issues that happened last time. If not, I'll find another doctor, even if that means paying out of pocket and/or traveling. (I'm in NYC, but the experts in this area are elsewhere.)