1. The selection and use of essential medicines. Report of the WHO Expert Committee. Technical Report Series 994,2015
2. The 19th WHO model list of essential medicines,2015
3. Patent situation of key products for treatment of hepatitis C: sofosbuvir,2015
4. Costly Hep C medicines for everyone?;New York Times,2015
5. The selection and use of essential medicines. Report of the WHO Expert Committee, 2002. Technical Report Series 914: 14–17,2002