Zhang Hong, Wu Dandan, Wang Zhen, Xu Jun, Wang Huiying
Department of Respiratory Medicine The First Affiliated Hospital of Zhejiang Traditional Medical University Hangzhou, Zhejiang Province, China.
Clin Respir J. 2010 Apr;4(2):127-8. doi: 10.1111/j.1752-699X.2009.00165.x.