the definition has undergone several revisions since then. now, as explained on the documents published by the world health organization (who), 'the diagnostic criteria for post-traumatic stress disorder (ptsd) require the 'traumatic event' to have been an event (or events) that involved either actual or threatened death or serious injury, or a threat to the physical integrity of the person concerned or others.'
Repeat this setence, but with the correct capitalization.
The definition has undergone several revisions since then. Now, as explained on the documents published by the World Health Organization (WHO), 'the diagnostic criteria for post-traumatic stress disorder (PTSD) require the 'traumatic event' to have been an event (or events) that involved either actual or threatened death or serious injury, or a threat to the physical integrity of the person concerned or others.'