1.
Z Gesamte Inn Med
; 36(9): 326-9, 1981 May 01.
Article
in German
| MEDLINE
| ID: mdl-6456606
2.
Dtsch Gesundheitsw
; 25(20): 922-6, 1970 May 21.
Article
in German
| MEDLINE
| ID: mdl-4942748