Endoscopic ultrasonography in achalasia.
Ponsot
P
P
Chaussade
S
S
Palazzo
L
L
Amouyal
P
P
Gaudric
M
M
Couturier
D
D
Paolaggi
J A
JA
D004931:Esophageal Achalasia / Q000175:diagnosis*; D004945:Esophagoscopy; D006801:Humans; D014463:Ultrasonography