1. Department of Epidemiology and Biostatistics Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College Beijing China
2. Department of Cardiology Kailuan General Hospital Tangshan China
3. Department of Respiration Medicine Linxi Hospital of Kailuan General Hospital Tangshan China
4. Department of Physical Examination Center Linxi Hospital of Kailuan General Hospital Tangshan China