; and (2) submit to Congress a report on the study conducted under paragraph (1). 24. Understanding the effects of severe forms of trafficking in persons (a) In general Title VI of the Justice for Victims of Trafficking Act of 2015 ( Public Law 114–22 ; 129 Stat. 258) is amended by adding at the end the following: 607. Understanding the physical and psychological effects of severe forms of trafficking in persons (a) In general The National Institute of Justice and the Centers for Disease Control and Prevention shall jointly conduct a study on the short-term and long-term physical and psychological effects of serious harm (as that term is defined in section 1589(c)(2) and section 1591(e)(4) of title 18, United States Code, as amended by the William Wilberforce Trafficking Victims Protection Reauthorization Act of 2008 ( Public Law 110–457 ; 122 Stat. 5044)) in order to determine the most effective types of services for individuals who are identified as victims of these crimes, including victims in cases that were not investigated or prosecuted by any law enforcement agency, and how new or current treatment and programming options should be tailored to address the unique needs and barriers associated with these victims. (b) Report Not later than 3 years after the date of enactment of the Abolish Human Trafficking Act of 2017 , the National Institute of Justice and the Centers for Disease Control and Prevention shall make available to the public the results, including any associated recommendations, of the study conducted under subsection (a). . (b) Table of contents amendment The table of contents in section 1(b) of the Justice for Victims of Trafficking Act of 2015 ( Public Law 114–22