Thank you, John, for posting websites where definitive reliable information can be foond!!! I think if I had not taken Mayo information into my doctor I still would be undiagnosed. PA runs in my family, uncle died from it mixed with Hasimoto’s disease, which I also gave. It is sure included in my medical records now!!! I guess s regular doc can’t know everything. I gave information to my daughters and they were tested by their now informed primary physicians. Thanks for responding!