From the April 7, 2020, edition of Fox News' The Ingraham Angle

LAURA INGRAHAM (HOST): That was President Trump from earlier today talking about that Democrat state rep from Michigan we had on last night who credits hydroxychloroquine and the president with saving her life. She says the drug eliminated her COVID symptoms within just a few hours but I suppose those doctors on CNN and MSNBC would just call that anecdotal evidence. Joining me now is my medicine cabinet. Dr. Stephen Smith, founder of the Smith Center for Infectious Diseases and Urban Health and Dr. Ramin Oskoui, cardiologist, CEO of Foxhall Cardiology. Dr. Smith, great to see you. I know you've been busy today and you're -- all your doctors have been very busy treating COVID patients. How much anecdotal evidence will it take to convince the naysayers?

DR. STEPHEN SMITH (FOUNDER, SMITH CENTER FOR INFECTIOUS DISEASES AND URBAN HEALTH): Yeah, I was talking about this with another physician. If we talked about all the anecdotal evidence we have, we'd say well this is proof that the drug works. There's a collection of very similar anecdotal stories where you stop a drug and restart it and if the patient worsens and they get better or the patient responds really rapidly. In this case, we've had several cases like that in both categories. In this case, it's anecdotal, in others it's therapeutic efficacy. I don't know, I don't get it. I don't get the difference in the way they're treating hydroxychloroquine. It makes no sense to me at all. Of course this drug works, and we should be using it more and more.

...

SMITH: I've never been called a quack.

INGRAHAM: Yeah, that's what [Dr. William Haseltine] is calling you, basically.

SMITH: I've called other doctors quacks, but I've never been called one. I'm stunned. I mean, the scientific evidence is robust. The safety data is unbelievable. People are arguing we shouldn't get hydroxychloroquine out for prophylaxis or to hoard because the lupus patients couldn't get it. And then they are saying it's not safe. Is it not safe or should lupus patients get it? It can't be both. Of course it's safe. Of course lupus patients do better on it. Our patients do better on it. And it's just data. Look at the data. That's all I'm saying. 

We talked about risk factors for severe disease, like we talk about steroid use or using some drugs like ibuprofen, nonsteroidals, or other drugs. That's the same sort of data they're looking at. It's observational data. But for that it's OK, if you're going to make an association between a drug and worse outcome. But if I'm making an association with a drug and a better outcome, that's not OK. That kind of illogical approach has no place in medicine or science. It's just disgusting.