China Food and Drug Administration

http://www.sfda.gov.cn/

National Health and Family Planning Commission (NHFPC) of China

http://www.nhfpc.gov.cn/

The Central People's Government of the People's Republic of China

http://www.gov.cn/

U.S. Food and Drug Administration

http://www.fda.gov/

World Health Organization

http://www.who.int/en/

U.S. Securities and Exchange Commission

http://www.sec.gov/index.htm

New York Stock Exchange

http://www.nyse.com/

New York Stock Exchange - SEC filings (CO)

http://secfilings.nyse.com/files.php?symbol=CO