http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12411081&dopt=Abstract http://news.xinhuanet.com/english/2003-09/10/content_1074451.htm_1-sep03

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12411081&dopt=Abstract http://news.xinhuanet.com/english/2003-09/10/content_1074451.htm_1-sep03

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http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12411081&dopt=Abstract http://news.xinhuanet.com/english/2003-09/10/content_1074451.htm_1-sep03

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