title: Foreign Body Aspiration-induced Unusual Exacerbation of Chronic Obstructive Pulmonary Disease.
authors.forename: Xiao-Xia
authors.initials: XX
authors.lastname: Ren
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing 100029, China.
authors.forename: Ting
authors.initials: T
authors.lastname: Yang
authors.forename: Hua-Ping
authors.initials: HP
authors.lastname: Dai
mesh_terms: D000368:Aged; D005547:Foreign Bodies / Q000150:complications*; D006801:Humans; D008297:Male; D029424:Pulmonary Disease, Chronic Obstructive / Q000150:complications*