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1961年Clarke等报导第1例以来,已有许多嵌合型Down综合征被注意到。作者报告1例初孕妇所生的男孩,于孕期头3个月曾作过两次静脉肾盂撮影。分娩时疑为
Since Clarke et al reported the first case in 1961, many chimeric Down syndromes have been noticed. The authors report that 1 boy born during the first trimester had intravenous pyelography twice during the first trimester of pregnancy. Suspected of childbirth