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Authors: Rydhstroem, H.; Kallen, K.
Source: Early Human Development, Volume 46, Number 1, 20 September 1996, pp. 43-53(11)
Document Type: Research Article
Affiliations: Department of Obstetrics and Gynecology, University Hospital of Lund, Getingevagen 4, S-221 85, Lund, Sweden
Publication date: September 20, 1996