Mary Beth Williams, PhD, LCSW, CTS, is an author, researcher, lecturer, and trainer in the area of trauma. In addition, she treats trauma survivors in private practice at the Trauma Recovery Education and Counseling Center in Warrenton, VA. Williams is former president of the Association of Traumatic Stress Specialists. She is a trainer for US Customs and Border Protection, cofounder of the proposed 501(c)(3) US Vet Source, and author of many articles, chapters, and books about trauma disorders.

Soili Poijula, PhD, is a clinical psychologist, licensed psychotherapist, and director at Oy Synolon Ltd., a center for trauma psychology in Finland, where she has done pioneering work as a developer of post-trauma psychotherapy.