**Bessel van der Kolk** is a Dutch psychiatrist, author and educator based in Boston, USA. Since the 1970s his research has been in the area of post-traumatic stress. Van der Kolk is professor of Psychiatry at Boston University School of Medicine and President of the Trauma Research Foundation in Brookline, Massachusetts. ([Wikipedia][1]) [1]: https://en.wikipedia.org/wiki/Bessel_van_der_Kolk