Maconi Giovanni, Sampietro Gianluca M, Ardizzone Sandro, Cristaldi Massimo, Danelli Piergiorgio, Carsana Luca, Bianchi Porro Gabriele
Gastrointestinal Unit, L. Sacco University Hospital, University of Milan, Milan, Italy.
Dig Dis Sci. 2004 Jan;49(1):138-42. doi: 10.1023/b:ddas.0000011615.64250.6e.