Newborn screening for congenital adrenal hyperplasia in Tokyo, Japan from 1989 to 2013: A retrospective population-based study

Congenital adrenal hyperplasia (CAH) cause life-threatening adrenal crisis. It also affects fetal sex development and can result in incorrect sex assignment at birth. In 1989, a newborn screening program for congenital adrenal hyperplasia (CAH) was introduced in Tokyo.