Pediatrics All of the following about Vitamin D metabolism are true except A 25–α hydroxylation takes place in liver B 1–α hydroxylation takes place in kidney C Daily requirement in the absence of sun–light is 450-6001U/day D Williams syndrome is associated with obesity, mental retardation, precocious puberty 💡 Explanation All of the following about Vitamin D metabolism are true except ✓ Correct Answer: D. Williams syndrome is associated with obesity, mental retardation, precocious puberty