Abstract
Xiao, D; Wang, C
Wang, C (reprint author), China Japan Friendship Hosp, Tobacco Med & Tobacco Cessat Ctr, Collaborating Ctr Tobacco Cessat & Resp Dis Preve, WHO,Ctr Resp Med, Beijing, Peoples R China.; Wang, C (reprint author), Chinese Acad Med Sci, Inst Resp Med, Beijing
BMJ-BRITISH MEDICAL JOURNAL, 2019; 365 ():