JIN Pule; TIAN Xiaoling; DU Yun; WANG Ping; WANG Min Respiratory Department; The Fourth Hospital of Hebei Medical University; Shijiazhuang 050011; China;

• 河北医科大学第四医院呼吸内科;河北医科大学第四医院教务科;河北医科大学第四医院病理科;