This isn't really a problem, but more of a question/intersting observation. I have always heard that people deepen thier voice by yelling, coughing, etc. So wouldn't you think that people with CF would have really deep voices? I was wondering about this after getting mistaken for a woman on the phone for like the 50th time. It doesn't really bother me, but why doesn't the coughing strain/strengthen/w/e the the vocal chords and make my voice deeper?