Sonographically guided percutaneous biopsy of gastrointestinal tract lesions. - Marco-Domenech,S.F.; Gil-Sanchez,S.; Fernandez-Garcia,P.; De La Iglesia-Carrena,P.; Gonzalez-Anon,M.; Arenas-Jimenez,J.J.; Alonso-Charterina,S.; Piqueras-Olmeda,R.M. (Am J Roentgenol, 2001)