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Ned Tijdschr Geneeskd
; 134(49): 2379-83, 1990 Dec 08.
Article
in Dutch
| MEDLINE
| ID: mdl-2263262
2.
Med Inform (Lond)
; 13(4): 303-5, 1988.
Article
in English
| MEDLINE
| ID: mdl-3246904