Notes
aThe journal's style utilizes the category substance abuse as a diagnostic category. Substances are used or misused; living organisms are and can be abused. Editor's note.
Additional information
Notes on contributors
![](/cms/asset/cb5e71de-e2dd-4734-907d-3b3dc99d6c7e/isum_a_66724_ilg0001.gif)
Yonette Thomas
Yonette Thomas, Ph.D., is Chief, Epidemiology Research Branch, in the Division of Epidemiology and Prevention Research of the National Institute on Drug Abuse.
![](/cms/asset/71bad47d-676c-4bf6-82d6-c36b66475482/isum_a_66724_ilg0002.gif)
Elizabeth Y Lambert
Elizabeth Lambert, M.Sc., is a Health Statistician and Program Official in the Epidemiology Research Branch.