Elsevier Masson, Gastroentérologie Clinique et Biologique / Research and Clinics in Hepatology and Gastroenterology, 5(28), p. 158-170
DOI: 10.1016/s0399-8320(04)95000-2
Springer Verlag, Acta Endoscopica, 3(36), p. 325-334
DOI: 10.1007/bf03006039
Full text: Unavailable