P. Sandbakken
发表
T. Halvorsen,
H. Petersen,
P. M. Kleveland,
1988,
Scandinavian journal of gastroenterology.
L. Sandvik,
S. Larsen,
H. Petersen,
1985,
Scandinavian journal of gastroenterology.
H. Petersen,
P. M. Kleveland,
I. Løge,
1986,
Scandinavian journal of gastroenterology.
H. Petersen,
P. M. Kleveland,
J. Dybdahl,
1990,
Scandinavian journal of gastroenterology.
L. Sandvik,
S. Larsen,
H. Petersen,
1985,
Scandinavian journal of gastroenterology. Supplement.
T. Halvorsen,
H. Petersen,
P. M. Kleveland,
1987,
Scandinavian journal of gastroenterology. Supplement.