No I don't have any link, and if you don't want to believe me, I just really don't care, I don't know if there is studies or not, I am just saying my OWN experience with this, what I experienced, and that was the question of this thread, if someone experienced some "odd" effects. As far as I understood, it's not supposed to be thread where you are looking to invalidate someone's experience, I know some people claim that they became shorter after hrt, while some people think it's impossible, etc... I don't know about that, because I didn't experience any of that, but I don't want to not believe it, just because I didn't get that change.
If it's in a list of possibles changes, then someone else might have seen that change too, and as I said before, It wasn't for me actually a higher pitch feminization type of change, more of my voice sounding clearer.