P053 Evaluating beneficial effects of smoking cessation on lung cancer mortality among workers with silicosis in hong kong
Lap Ah Tse, Chi Chiu Leung, Xiaona Lin, Hong Qiu, Feng Wang, Ignatius Tak-sun Yu
Occupational and Environmental Medicine Sep 2016, 73 (Suppl 1) A138; DOI: 10.1136/oemed-2016-103951.376