WORLD JOURNAL OF GASTROENTEROLOGY, Volume 16, Issue 40,2010, Pages 5084-5091, doi:10.3748/wjg.v16.i40.5084
SHANDONG MEDICAL JOURNAL, Volume 50, Issue 40,2010, Pages 30, doi:10.3969/j.issn.1002-266X.2010.40.018
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 90, Issue 40,2010, Pages 2876-2878, doi:10.3760/cma.j.issn.0376-2491.2010.40.018
SHANDONG MEDICAL JOURNAL, Volume 50, Issue 40,2010, Pages 79-80, doi:10.3969/j.issn.1002-266X.2010.40.048