@annya @eileent
That is so great to hear. I wish there was more research on these products and other lifestyle factors that may help convert us to negative and keep us that way. Someone mentioned at the conference that there was really no data to back up the effectiveness of airway clearance devices... Isn't that strange? Reminds me of the stories from a few years back that there was really no research data to back up the effectiveness of daily flossing! And yet, dentists and the like keep asking you to do that. Mary