1.
Z Arztl Fortbild (Jena)
; 71(13): 647-9, 1977 Jul 01.
Article
in German
| MEDLINE
| ID: mdl-930142
2.
Z Arztl Fortbild (Jena)
; 71(12): 598-604, 1977 Jun 15.
Article
in German
| MEDLINE
| ID: mdl-906577