JOURNAL OF QIQIHAR MEDICAL COLLEGE, Volume 30, Issue 13,2009, Pages 1654, doi:10.3969/j.issn.1002-1256.2009.13.080
HEBEI MEDICAL JOURNAL, Volume 31, Issue 13,2009, Pages 1644-1646, doi:10.3969/j.issn.1002-7386.2009.13.063
CHINA JOURNAL OF MODERN MEDICINE, Volume 19, Issue 13,2009, Pages 1945-1947,1951, doi:10.3969/j.issn.1005-8982.2009.13.007
INTERNATIONAL MEDICINE & HEALTH GUIDANCE NEWS, Volume 15, Issue 13,2009, Pages 22-23, doi:10.3760/cma.j.issn.1007-1245.2009.13.009