I have been using a Phillips cpap for at least 9 years. It is a REMstar PRO which showed was not a part of the recall, but the serial numbers for it shows that it is on recall list. I have not had any respiratory difficulties. What concerns me is the dampener being a carcinogen. Any information on the possibility of developing cancer. What to be alert of. If should have any diagnostic tests performed? Beg forgiveness if have posted in incorrect location. Thank You