Dear Whitney, 

There are much research on this issue. Check what else these researchers here on RG have written: 

Article Childhood trauma and risk for PTSD: Relationship to intergen...

Article Maternal Age at Holocaust Exposure and Maternal PTSD Indepen...

Article Mental Health in Offspring of Traumatized Refugees with and ...

Article A Review of Reviews Examining Neurological Processes Relevan...

Conference Paper Narrative Exposure Therapy for parental PTSD after PICU

Dear Whitney ,

There are a lot of research .For example

.American Journal of Orthopsychiatry Copyright 2008, Vol. 78, No. 3, 281–289

.Int J Ment Health Syst. 2014; 8: 12.Published online 2014 Apr 1.

Also there are much researches concern about it especially in Palestine ( in Arabic )

Good luck

Thank you!!!