Researchers find possible cause of COVID-19 long-hauler symptoms<br/><a href="https://www.thv11.com/article/news/health/coronavirus/arkansas-researchers-possible-cause-long-lasting-covid-19-symptoms/91-9c719c51-2336-4699-bb0f-160d44f1df00" rel="noreferrer noopener" target="_blank">thv11.com</a>