O W Cass

发表

T. Beebe, T J Beebe, S. Adlis, 2001, Journal of clinical gastroenterology.

C. Peine, R. Zera, C J Peine, 1993, Annals of Internal Medicine.

J E Gray, A. Aufderheide, J. Tashjian, 1986, AJR. American journal of roentgenology.