This is misleading when it comes to understanding the implications and extent of PTSD as a neurological disorder. Dating back to the definition of Gross stress reaction in the DSM-I, civilian experience of catastrophic or high stress events is included as a cause of PTSD in medical literature. The 2014 National Comorbidity Survey reports that "the traumas most commonly associated with PTSD are combat exposure and witnessing among men and rape and sexual molestation among women." Because of the initial overt focus on PTSD as a combat related disorder when it was first fleshed out in the years following the war in Vietnam, in 1975 Ann Wolbert Burgess and Lynda Lytle Holmstrom defined Rape trauma syndrome, RTS, in order to draw attention to the striking similarities between the experiences of soldiers returning from war and of rape victims. This paved the way for a more comprehensive understanding of causes of PTSD. After PTSD became an official psychiatric diagnosis with the publication of DSM-III (1980), the number of personal injury lawsuits (tort claims) asserting the plaintiff suffered from PTSD increased rapidly. However, triers of fact (judges and juries) often regarded the PTSD diagnostic criteria as imprecise, a view shared by legal scholars, trauma specialists, forensic psychologists, and forensic psychiatrists. Professional discussions and debates in academic journals, at conferences, and between thought leaders, led to a more clearly-defined set of diagnostic criteria in DSM-IV, particularly the definition of a "traumatic event". The DSM-IV classified PTSD under anxiety disorders, but the DSM-5 created a new category called "Trauma- and Stressor-Related Disorders," in which PTSD is now classified. The Diagnostic and Statistical Manual of Mental Disorders does not hyphenate 'post' and 'traumatic', thus, the DSM-5 lists the disorder as "posttraumatic stress disorder". However, many scientific journal articles and other scholarly publications do hyphenate the name of the disorder, "viz.", post-traumatic stress disorder. Dictionaries also differ with regard to the preferred spelling of the disorder with the "Collins English Dictionary – Complete and Unabridged" using the hyphenated spelling, and the "American Heritage Dictionary of the English Language, Fifth Edition" and the "Random House Kernerman Webster's College Dictionary" giving the non-hyphenated spelling. Some at the Pentagon have used the terminology "PTSS" (syndrome instead of disorder, to avoid connotation of stigma), or just "PTS". The comedian George Carlin criticized the euphemism treadmill which led to progressive change of the way PTSD was referred to over the course of the 20th century, from "shell shock" in the First World War to the "battle fatigue" in the Second World War, to "operational exhaustion" in the Korean War, to the current "post-traumatic stress disorder", coined during the Vietnam War, which "added a hyphen" and which, he commented, "completely burie[s] [the pain] under jargon".