Your right the references were a bit lacking I added the url to the Casey Family Programs fact sheet on PTSD deleted the one to the Seattle Times article and moved the one for Dubner and Motta The fact that PTSD was found to effect  of foster children has fairly profound implications for society in general There are over  kids in foster care in the United States right now thats  cases right there and PTSD has been shown to have an epigenetic effect so it affects generations Yehuda R Bierer LM Prog Brain Res  Transgenerational transmission of cortisol and PTSD risk PMID