TY - JOUR AU - Zhang L. AU - Zhao F. AU - Niu W. AU - Zhang P. BT - Chinese Journal of Health Education IS - 29 LA - eng PY - 2013 SE - 12 SP - 12 EP - 14 + 18 T2 - Chinese Journal of Health Education TI - Investigation of low sodium-salt intake and its influencing factors in Beijing ER -