Key Laboratory of Cell Proliferation and Regulation of Ministry of Education;
Beijing Normal University;
Beijing 100875;
China;
Department of Thoracic Surgery;
General Hospital of Beijing Command;
PLA;
Beijing 100700;
China;
Department of Respiratory Medicine;
Second Hospital of Xi'an Jiaotong University;
Xi'an 710004;
Shaanxi;
China;
Ciphergen Biosystems;
Inc.;
Fremont;
CA 94555;
USA;