目的：探讨孕妇孕中期进行唐氏筛查的临床应用价值。方法使用全自动时间荧光免疫分辨仪对3236例孕中期（14～20+6周）妇女进行血清标记物血......

Rationale: Leishmaniasis, caused by the protozoan Leishmania and transmitted by sandflies, is endemic to the tropical an......