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Rev. méd. Moçamb
; 5(2): 3-7, 1994. ill., ^c30 cm
Article
in Portuguese
| AIM
| ID: biblio-1269243
2.
Bull. W.H.O. (Online)
; 69(3): 347-348, 1991.
Article
in English
| AIM
| ID: biblio-1259781