SHANDONG MEDICAL JOURNAL, Volume 46, Issue 13,2006, Pages 9-11, doi:10.3969/j.issn.1002-266X.2006.13.004
CHINESE JOURNAL OF PRACTICAL INTERNAL MEDICINE, Volume 26, Issue 13,2006, Pages 1026-1028, doi:10.3969/j.issn.1005-2194.2006.13.023
INTERNATIONAL MEDICINE & HEALTH GUIDANCE NEWS, Volume 12, Issue 13,2006, Pages 136-138,
SHANDONG MEDICAL JOURNAL, Volume 46, Issue 13,2006, Pages 1-3, doi:10.3969/j.issn.1002-266X.2006.13.001
HEALTH VOCATIONAL EDUCATION, Volume 24, Issue 13,2006, Pages 95-96, doi:10.3969/j.issn.1671-1246.2006.13.059