International symposium on biological product freeze-drying and formulation : proceedings of a symposium organized by the Center for Biologics Evaluation and Research of the United States Public Health Service Food and Drug Administration and the International Association of Biological Standardization held at the Jack Masur Auditorium of the Warren Grant Magnuson Clinical Center of the National Institutes of Health, Bethesda, Maryland, USA, 24-26 October 1990 /