I would like to point out that in his last email to me at least 6 weeks ago, perhaps longer, the speech pathologist who went on and on about studies showing "invisible aspiration" promised to send me references to back up his assertions. I had provided him with my home address and he emailed back the next day that he would. I have still not received the references. The Canadian mail *is* slow, true, but allowing for that and allowing 2 or 3 weeks to gather up a few studies, I think I should have received something by now. I believe our man was trying to provoke us and he succeeded well. It was worth questioning accepted ideas, as it always is. But I believe he was bluffing. Jack Newman, MD, FRCPC