Navigating public, semi-public, and private drug use environments: A qualitative examination of unsheltered homelessness and drug use in Baltimore City - Ashley Q. Truong; Bridget Duffy; Haneefa T. Saleem; Jessie Chien; Gregory D. Kirk; Shruti H. Mehta; Becky L. Genberg; Sabriya L. Linton (PLoS ONE, 2025)