1. 1 Ministry of Health of the People's Republic of China.Percentage of 10 Main Diseases of Inpatients in City Hospitals of Health Sector. Cited 12 May 2007. Available from URL: http://www.moh.gov.cn/open/statistics/digest06/y21.htm
2. Hepatitis B in China
3. 3 The Thomson Corporation.The Year 2006: Top 20 Country Rankings in All Fields. Cited 12 May 2007. Available from URL: http://www.in-cites.com/countries/2006allfields.html
4. 4 The Thomson Corporation.Journal Search: Science Citation Index Expanded Subject Categories. Cited 12 May 2007. Available from URL: http://www.isinet.com/cgi-bin/jrnlst/jlsubcatg.cgi?PC=D
5. 5 PubMed. Cited 12 May 2007. Available from URL: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed