* Fifty-fourth meeting of the WHO Expert Committee on Biological Standardization, 17-21 November 2003, Geneva. Participation included members from: Belgium, Canada, France, Indonesia, Republic of Korea, Mexico, Netherlands, Russian Federation, Switzerland, United Kingdom, United States of America. Representatives from: Global Collaboration of Blood Safety, European Diagnostic Manufacturers Association, Council of Europe, Developing Country Vaccine Manufacturers Network, European Plasma Fractionation Association, International Association of Biologicals, International Bureau of Weights and Measures, International Federation of Clinical Chemistry and Laboratory Medicine, International Federation of Pharmaceutical Manufacturers Associations, International Society on Thrombosis and Haemostatis, Plasma Protein Therapeutics Association, United States Pharmacopeia.