I couldnt access this link either. I did how ever click on the link the error message gave me. it gives lots of links to many different classes taught at middlebury (a college)

Some colleges only put up links on all kinds of things for only a short time. usually for what ever time that case study or class assignment is going on.

Im guessing thats what happened to this link because I can access their other classes like - bio 130 climate change and its ecological impacts and many other classes in this link so Im guessing someone at middlebury took the ptsd stuff we are looking for down. I may be wrong but thats what happens at the colleges around me who place info on their websites.