Urologist Urologist JC Trussell, MD, discusses male infertility JC Trussell, MD, discusses male infertility. Pediatric rheumatologist. Pediatric rheumatologist Caitlin Sgarlat Deluca, DO, talks about the proliferation of products containing cannabidiol, or CBD Caitlin Sgarlat Deluca, DO, talks about the proliferation of products containing cannabidiol, or CBD. Emergency physician. Emergency physician William Paolo, MD, gives an overview of head injuries. William Paolo, MD, gives an overview of head injuries.