Greg, Thank you for your being involved in this effort to address the issues and concerns of so many people. I have long Covid and have for over 15 months; I have been working with two Utah hospitals , one of which has diagnosed my condition as Dysautonomia in which my blood drains to my feet but does not get pumped back to my heart and brain. Both hospitals have had extensive experience with brain trauma because of snowboarders and the like and have found similarities to cases like mine. Have you all considered a possible connection? I am early in my treatment but if they are correct it could help others whose messages we read about here. Thanks for considering. John