Officials with the Department of Veterans Affairs had better gear up for significant number of Posttraumatic Stress Disorder (PTSD) cases over the coming years, say researchers at Stanford University. Using survey data based on current cases and advanced mathematical modeling to project out future years, the researchers concluded that more than one third of all troops deployed to Iraq may develop PTSD. They argue that because there is a lag between exposure to combat and the onset of the condition, it is important to plan ahead for many future cases to come. This could prove especially daunting for the VA, which has already been struggling to provide sufficient services to veterans currently suffering from PTSD.