1.
TVZ
; 103(23-24): 773-6, 1993 Dec 16.
Article
in Dutch
| MEDLINE
| ID: mdl-7945942
2.
TVZ
; 103(23-24): 776-80, 1993 Dec 16.
Article
in Dutch
| MEDLINE
| ID: mdl-7945943
3.
TVZ
; (4): 140-4, 1992 Feb 20.
Article
in Dutch
| MEDLINE
| ID: mdl-1567570