Discuss about why PTSD (Post-traumatic stress disorder) and SUD (substance use disorder) need to be treated together.

1.Discuss about why PTSD (Post-traumatic stress disorder) and SUD (substance use disorder) need to be treated together.
2.Types of behavioral treatments available for PTSD and SUD (treatments used to treat BOTH disorders.
3.Why a systematic review would be helpful (study rationale)

no need to talk about how to diagnose the disorders, prevalence, burden of disease,