OCCUPATION AND HEALTH, Volume 22, Issue 21,2006, Pages 1846-1847, doi:10.3969/j.issn.1004-1257.2006.21.052
CHINESE JOURNAL OF MISDIAGNOSTICS, Volume 6, Issue 21,2006, Pages 4164-4165, doi:10.3969/j.issn.1009-6647.2006.21.051
CHINA PHARMACY, Volume 17, Issue 21,2006, Pages 1662-1663, doi:10.3969/j.issn.1001-0408.2006.21.027
MEDICINE INDUSTRY INFORMATION, Volume 3, Issue 21,2006, Pages 21-22, doi:10.3969/j.issn.1673-7210.2006.21.011