Bio

JUSTIN RICHARDSON, M.D., is an assistant professor of psychiatry at Columbia and Cornell universities and a well-known authority on kids and sex.
MARK A. SCHUSTER, M.D., PH.D., is an associate professor of pediatrics and public health at UCLA,
codirector of the Center for Child and Adolescent Health Research at RAND, and director of the UCLA/RAND Center for Adolescent Health Promotion.

"From the Hardcover edition.