Joe S. McIlhaney, Jr., MD, is a board-certified obstetrician/gynecologist who resides in Austin, Texas, with his wife, Marion. In 1995, he left his private practice of 28 years to devote his full-time attention to working with the Medical Institute for Sexual Health, a nonprofit medical/educational research organization. . Kathryn Stamoulis, Ph.D. is a counselor and educational psychologist residing in New York City. She specializes in adolescent development, specifically adolescent sexuality and internet behaviors.