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