3WHO access to Essential Medicines as a Global Necessity 25th Anniversary of the WHO Model List of Essential Medicines [ EB/OL ]. [2006-05-20 ] http://www. who. int/dg/apeeches/2002/whoessentialmedicines/en/print. html.
6WERTHEIMER A I, SANTELLA T M. Innovation and the WHO's essential medicines list: Giving credit where credit is due [ J]. Res Social Admi Pharm ,2007 ( 3 ) : 137 - 144.
7DIMASI J A. RISKS in New Drug Development :Approval success rates for investigational drugs[ J]. Clin Pharmacol Therapeutics ,2001 (4) :197 -307.
9Essential Drugs and Medicines Policy[EB/OL].http://www.Who.org.int.
10Wertheimer AI,Santella TM.Innovation and the WHO's essential medicines list:Giving credit where,credit is due[J].Res Social Adm Pharm,2007,3(1):137-144.