High incidence of upper gastrointestinal tract involvement in Crohn's disease
1990 ◽
Vol 25
(3)
◽
pp. 364
◽
2018 ◽
Vol 12
(12)
◽
pp. 1399-1409
◽
2019 ◽
2017 ◽
Vol 20
(4)
◽
pp. 227
◽