by Norton, I.D., Apte, M.V., Lux, O., Haber, PS, Pirola, R.C., Wilson, J.S.
Published in The Journal of laboratory and clinical medicine (01.05.1998)

by Gines, .A., Vazquez-Sequeiros, E., Norton, I.D., Clain, J.E., K.Wang, K., Wiersema, M.J.
Published in Gastrointestinal endoscopy (01.04.2000)

by Affi, .A., Vazquez-Sequeiros, E., Norton, I.D., Clain, J.E., Wiersema, M.J.
Published in Gastrointestinal endoscopy (01.04.2000)

by Vazquez-Sequeiros, E, Baron, T.H, Clain, J.E, Gostout, C.J, Norton, I.D, Petersen, B.T, Wiersema, M.J
Published in The American journal of gastroenterology (2000)

by Vazquez-Sequeiros, E., Norton, I.D., Clain, J.E., Affi, K.K.Wang;A., Allen, M., Deschamps, C., Miller, D., Trastek, V., Pairolero, P., Wiersema, M.J.
Published in Gastrointestinal endoscopy (01.04.2000)

by Vazquez-Sequeiros, E., Baron, T.H., Clain, J.E., Gostout, C.J., Norton, I.D., Petersen, B.T., Wiersema, M.J.
Published in The American journal of gastroenterology (01.09.2000)