The lecture Pediatric Sickle Cell Disease: Management by Brian Alverson, MD is from the course Pediatric Hematology.
I would definitely recommend the entire lecture series on Paedeatrics. The lecturer is very clear in making high yield points about each topic and everything is well explained. There is an effortless flow in his delivery, which ties in all the points made, in a nice orderly fashion. This makes it easy to wrap your head around the concepts being discussed.