A community-based obstetric ultrasound service
Geerts, L. ; Theron, A.M. ; Grove, D. ; Theron, G.B. ; Odendaal, H.J.
International journal of gynecology and obstetrics, 2004, Vol.84 (1), p.23-31
[Periódico revisado por pares]
Shannon: Elsevier Ireland Ltd
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