Another Expert who knows what he's talking about #VitaminD

Right, since finishing the draft of my 25(OH)D seminar content, I've been treating myself to finding and watching some of the best in the field displaying their experience. This is a delightful Doc, with a lifetime of experience. He is also very humorous in discussing the Debacle, excellent anger management there considering the reality. A lovely and informative watch of first-hand clinical experience.