In this study , Increasing Viral Testing in the Emergency Department ( InVITED ) , the authors investigated if a brief intervention about human immunodeficiency virus ( HIV ) and hepatitis C virus ( HCV ) risk-taking behaviors and drug use and misuse in addition to a self-administered risk assessment , compared to a self-administered risk assessment alone , increased uptake of combined screening for HIV and HCV , self-perception of HIV/HCV risk , and impacted beliefs and opinions on HIV/HCV screening .