But, my case is really a complicated one.. Don't think my back issue is the ONLY cause to my knee pain. oh well, I'll leave the "doctor-ing" to the doctors. And yah, disadvantages (HUGE), is the non fixed doctor(s) I get. But I'm getting used to it Just know what you seek and ask ask ask if you're unclear or want to find out more. Don't be pushed around by the doctors (i've had some parts of these as well). I had to insist and persist so many times.
In short, can die, but cannot fall ill.