WHO Expert Committee on the Use of Essential Drugs & World Health Organization. (2000). The use of essential drugs: Ninth report of the WHO Expert Committee (including the revised Model list of essential drugs). World Health Organization.

WHO Expert Committee on the Use of Essential Drugs and World Health Organization. The Use of Essential Drugs: Ninth Report of the WHO Expert Committee (including the Revised Model List of Essential Drugs). Geneva: World Health Organization, 2000.

WHO Expert Committee on the Use of Essential Drugs and World Health Organization. The Use of Essential Drugs: Ninth Report of the WHO Expert Committee (including the Revised Model List of Essential Drugs). World Health Organization, 2000.