Unusual upper gastrointestinal diseases associated with achalasia: Laparoscopic approach

1. Berindoague, R.
2. Targarona, E.
3. Pala, X.
4. Balagué, C.
5. Martinez, C.
6. Hernandez, P.
7. Agusti, A.
8. Sallent, E.
9. Mones, J.
10. Trias, M.