Have not been able to adjust to wearing the face mask, I was diagnosed with severe Apnea and sold a CPAP. I had a pulmonary Iemboli in both lungs and later heart arrhythmia all this year. I am frustrated and can not believe this is the 21st century with the best thing available is wearing a mask designed and used in World War 1 with the success rate about the same. 50% success rate. Thank God for WW1, the bombers where the flight crews had to use these masks and the Germans' use of Gas forcing the design and use of the face mask. My HMO uses the CPAP with and outside source selling and providing the machine which is loud and the mask is a challenge to keep in place. I am suprised the amount of people I have met with the problem but do not know anyone that has continued using the mask and go on.