B. S. Ramakrishna
发表
S. Krishnan,
M. Mathan,
S. Murthy,
2000,
Gut.
B. Ramakrishna,
I. Roberts‐Thomson,
W. Roediger,
1991,
Gut.
A. Venkatraman,
A. Pulimood,
B. Ramakrishna,
2000,
Scandinavian journal of gastroenterology.