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Placenta|April 21, 2001
Defect of syncytiotrophoblast formation and human chorionic gonadotropin expression in Down's syndromeN Massin, J L Frendo, J Guibourdenche, et al.
Placenta|June 2, 2000
Umbilical cord ulcer: a serious in utero complication of intestinal atresiaM Ohyama, Y Itani, M Yamanaka, et al.
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