References
         
         
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               Lorenzen J, Sinkus R, Adam G. 
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               Cochlin D L, Ganatra R H, Griffiths DF. 
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               Saftoiu A, Vilman P. 
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               of tissue elasticity distribution. 
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G. Mezzi
            Department of Gastroenterology and Gastrointestinal			 Endoscopy
            
            IRCCS Vita-Salute University
            
            San Raffaele Scientific Institute of Milan
            
            Via Olgettina 60
            
            20132 Milan
            
            Italy
            
            Fax: +39-02-26432504
            
            Email: mezzi.gianni@hsr.it