Hunan Cancer Hospital, Changsha, Hunan, China
Jiangsu Province Centers for Disease Control and Prevention, Nanjing, Jiangsu, China
Beijing Chest Hospital, Beijing, Beijing, China
Changde First People's Hospital, Changde, Hunan, China
Sun Yat-sen Memorial Hospital,Sun Yat-sen University, Guangzhou, Guangdong, China
Beijing Friendship Hospital, Capital Medical University, Beijing, Beijing, China
Beijing Chest Hospital, Capital Medical University, Beijing, Beijing, China