Blood Lead Levels, Hemoglobin, and Liver Enzymes in Opium-Dependent Addicts oleh Farzaneh Montazerifar, Mansour Karajibani, Maryam Lashkaripour, Manijeh Sayyad Mollashahi, Abbas Ali Niazi, Moghgan Soltan Mohammadi, Samaneh Rahimi Helari