A cross‐sectional study comparing men who have sex with men and inject drugs and people who inject drugs who are men and have sex with men in San Francisco: Implications for HIV an... oleh Adelina Artenie, Shelley N. Facente, Sheena Patel, Jack Stone, Jennifer Hecht, Perry Rhodes III, Willi McFarland, Erin Wilson, Peter Vickerman, Meghan D. Morris