Wasn't sure where to put this. My husband got a letter from ATS this week. My heart dropped at first thinking it was a recall on his aortic valve. I usually don't open his mail but he was still at work and I couldn't wait. It was a form type letter wanting to know if he still had his valve and thanking him for choosing it. He has had it nearly 7 1/2 years. It asked that we notify them if we had a change of address,etc. When my husband got home from work I showed him the letter. He said he was glad to know they were keeping up with him. I told him they probably had a tracking device and knew everything he did. He said he hoped they didn't know everything. Gotta love him after 40 years. Has anyone else got a similar letter from their valve manufacturers?