Latent classes of injection risk behavior in a cohort of young injection drug users

Mary Ellen Mackesy-Amiti, PhD1, Lorna Finnegan, PhD2, Lawrence J. Ouellet, PhD1, Elizabeth T. Golub, PhD, MPH3, Holly Hagan, PhD4, Sharon M. Hudson, PhD5, Mary H. Latka, PhD6 and Richard Garfein, PhD7
(1)University of Illinois at Chicago, School of Public Health, Chicago, IL, (2)University of Illinois at Chicago, Chicago, IL, (3)Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, (4)National Development and Research Institutes, Inc., New York, NY, (5)Kaiser Permanente Southern California, Pasadena, CA, (6)Aurum Insitute for Health Research, Johannesburg, Gauteng, South Africa, (7)University of California San Diego, La Jolla, CA