Ward A. Olsen
发表
H. Gudjónsson,
W. Olsen,
A. Shug,
1985,
Gastroenterology.
P. Bass,
W. Olsen,
G. Gullikson,
1977,
Gastroenterology.
W. Olsen,
A. Shug,
B. U. Li,
1986,
Gastroenterology.