HomeAll VideosChildhood Gender Dysphoria – Physiological Effects of Hormone Blockers. – Sex Reassignment. (Part 4) Childhood Gender Dysphoria – Physiological Effects of Hormone Blockers. – Sex Reassignment. (Part 4) / All Videos, Prof. John Whitehall, Sex Reassignment Surgery / By Caused Prof John Whitehall paediatrician for over 50 years speaks about many of the aspects of Childhood Gender Dysphoria. This page has relocated. Click on image below. PROFESSOR JOHN WHITEHALL. CLICK TO WATCH or READ.