摘要:In 1993, the European Society for Traumatic Stress (ESTSS) was founded by a group of men from all over Europe. At the time, 20 years ago, Europe was shaken by a war in southeast Europe. The Berlin Wall had fallen, the eastern countries of the continent were recovering from the consequences of problematic regimes, and the European Union was smaller than it is today. The continent of Europe was in some areas very rich and well developed; in other regions, it was poor and suffering from ongoing conflicts. This thematic cluster of papers has contributions from almost all past presidents of ESTSS, since the start of ESTSS in 1993 up to its 20th anniversary in 2013. Erica van der Schrieck-de Loos has written a memorial contribution given the sad loss of her father Walter de Loos. Bas Schreuder was unable to contribute but sent his congratulations and has explained his connectedness with ESTSS.(Published: 6 June 2013)Citation: European Journal of Psychotraumatology 2013, 4: 21368 - http://dx.doi.org/10.3402/ejpt.v4i0.21368This paper is part of the thematic cluster The Past Presidents’ Reviews - 20 years of European Psychotraumatology - more papers from this cluster can be found here.