Comment: "McCullough is professor of medicine and vice chief of internal medicine at Baylor University and also teaches at Texas A&M University. He is an epidemiologist, cardiologist and internist and has testified before the Texas State Senate related to COVID-19 treatments. He holds the distinction of being the most widely cited physician in the treatment of COVID-19 with more than 600 citations in the National Library of Medicine."
The article says most of his comments are in the first 10 minutes, but I think he has plenty of additional good things to say during the entire video.