Theresa Fry - In 2000, I heard an Epidemiologist at [then Dartmouth, now] Geisel Medical School 'Grand Rounds' present: "52% of Detroit Metropolitan Area Schoolchildren met the DSM-IV criteria for PTSD". (This was before I learned of the CDC/Kaiser ACE study). Subsequently, similar numbers [of schoolchildren] were reported in Philadelphia, Baltimore, Atlanta, and in June of 2018 -at five charter schools in New Orleans. The World Health Organization adopted [and expanded upon] an ACE screening tool that addresses 'two types' of 'ACEs': 'Adverse Community Environments' and 'Adverse Childhood Experiences'-which WHO used in their 2013 assessment of the world's healthiest children. While the 'diagnostic constructs' may have 'overlaps' between 'C/PTSD', PTSD, 'ACEs', I found that the nation with the healthiest children in that WHO 2013 study, using the WHO ACE Intrnational Questionaire-(available in over 100 languages) long had a 'resilience-building children's story (the Dutch boy who put his finger in the dike to prevent a flood). I hope your efforts to 'further your studies and stay informed' meet with [on-going] success.