1 Department of Essential Medicines and Health Products, World Health Organization, 1211 Geneva 27, Switzerland.
2 Department of Information, Evidence and Research, World Health Organization, 1211 Geneva 27, Switzerland.
3 WHO Special Initiatives Cluster, World Health Organization, 1211 Geneva 27, Switzerland.
4 Access to Medicines, Vaccines and Pharmaceuticals Cluster, World Health Organization, 1211 Geneva 27, Switzerland.
5 Office of the Deputy Director-General for Programmes, World Health Organization, 1211 Geneva 27, Switzerland. Electronic address: swaminathans@who.int.