1. United BioSource CorporationLexingtonMAUSA
2. United BioSource CorporationBethesdaMDUSA
3. United BioSource CorporationMontrealQuebecCanada
4. Eisai Europe LtdHatfieldHertfordshireUnited Kingdom
5. United BioSource CorporationBogotáColombia
6. Industrial Engineering Department Universidad de los AndesBogotáColombia