PARIS, Dec. 15, 2008 (GLOBE NEWSWIRE) -- Doctors in the U.S. and Germany have enrolled the first patients in an international, multi-center study designed to add to the growing body of clinical evidence that shows that Cellvizio(r), the world’s smallest microscope, helps physicians confirm if Barrett’s Esophagus has progressed so they can treat the dysplastic or cancerous condition immediately with fewer biopsies.