1.
Z Arztl Fortbild (Jena)
; 73(6): 270-3, 1979 Mar 15.
Article
in German
| MEDLINE
| ID: mdl-463099
2.
Dtsch Gesundheitsw
; 28(1): 22-7, 1973 Jan 01.
Article
in German
| MEDLINE
| ID: mdl-4712890