| Research Site |
| Birmingham, Alabama, United States |
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| Los Angeles, California, United States |
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| San Francisco, California, United States |
| Research Site |
| Santa Rosa, California, United States |
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| Stockton, California, United States |
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| Denver, Colorado, United States |
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| Hartford, Connecticut, United States |
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| Atlantis, Florida, United States |
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| Chicago, Illinois, United States |
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| Maywood, Illinois, United States |
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| Auburn, Maine, United States |
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| Baltimore, Maryland, United States |
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| Ann Arbor, Michigan, United States |
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| Petoskey, Michigan, United States |
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| Minneapolis, Minnesota, United States |
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| St. Paul, Minnesota, United States |
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| Buffalo, New York, United States |
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| Valhalla, New York, United States |
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| Williamsville, New York, United States |
| Research Site |
| Chapel Hill, North Carolina, United States |
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| Toledo, Ohio, United States |
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| Danville, Pennsylvania, United States |
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| Houston, Texas, United States |
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| Milwaukee, Wisconsin, United States |
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| Auchenflower, Australia |
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| Clayton, Australia |
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| Heidelberg, Australia |
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| New Lambton, Australia |
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| Aalst, Belgium |
| Research Site |
| Bruxelles, Belgium |
| Research Site |
| Edegem, Belgium |
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| Liege, Belgium |
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| Halifax, Nova Scotia, Canada |
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| Montreal, Quebec, Canada |
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| Ste-Foy, Quebec, Canada |
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| Massy, France |
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| Limoges, France |
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| Lyon, France |
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| Creteil, France |
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| Melun, France |
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| Paris, France |
| Research Site |
| Pessac, France |
| Research Site |
| Toulouse, France |
| Research Site |
| Pisa, Italy |
| Research Site |
| Milan, Italy |
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| Pavia, Italy |
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| Genova, Italy |
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| Rome, Italy |
| Research Site |
| Rome, Italy |
| Research Site |
| Siena, Italy |
| Research Site |
| Udine, Italy |
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| Rozzano, Milan, Italy |
| Research Site |
| Mirano, Venezia, Italy |
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| Amsterdam, Netherlands |
| Research Site |
| Maastricht, Netherlands |
| Research Site |
| Nieuwegein, Netherlands |
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| Zwolle, Netherlands |
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| Barcelona, Spain |
| Research Site |
| Madrid, Spain |
| Research Site |
| Valladolid, Spain |
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| Murias, Spain |
| Research Site |
| Malaga, Spain |