Interview with Brad Spellberg, MD, author of <a href='http://jamanetwork.com/journals/jamainternalmedicine/fullarticle/10.1001/jamainternmed.2020.0555'>Evaluation of a Paradigm Shift From Intravenous Antibiotics to Oral Step-Down Therapy for the Treatment of Infective Endocarditis: A Narrative Review</a>