- Georgetown University Bicentennial Symposium (1989 : Georgetown University)1
- Hatcher, Robert Anthony, 1937-1
- ICPD + 5 Forum (1999 : Hague, Netherlands)1
- International Conference on AIDS 1988 : Stockholm, Sweden)1
- International Conference on AIDS 1996 : Vancouver, B.C.)1
- International Conference on Coexistence of Neuroactive Substances in Neurons (1982 : National Institutes of Health (U.S.))1
- International Congress of Pharmaceutical Sciences of F.I.P. 1991 : Washington, D.C.)1
- International School of Crystallography. Course 1990 : Erice, Italy)1
- International School of Neuroscience (1989 : Padua, Italy)1
- International School of the History of Biological Sciences 1990 : Ischia, Italy)1
- International School of the History of Biological Sciences 1992 : Ischia, Italy)1
- International Symposium on Chromaffin Cell Biology 1986 : Coolfont, W. Va.)1
- International Workshop on Neuroimmunomodulation 1984 : Bethesda, Md.)1
- International Workshop on Neuroimmunomodulation 1986 : Dubrovnik, Croatia)1
- Isaac, John.1
- Jost, Monika.1
- Langfeld, Marilyn.1
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- MEDINFO 1995 : São Paulo, Brazil)1
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