1.
Gastrointest Endosc
; 26(1): 21-2, 1980 Feb.
Article
in English
| MEDLINE
| ID: mdl-6444602
2.
Gastrointest Endosc
; 24(4): 175-6, 1978 May.
Article
in English
| MEDLINE
| ID: mdl-648843