Infants and young children with unrepaired tetralogy of Fallot are often blue (cyanotic).
患有法洛四联症的婴幼儿经常表面、口唇青紫(发绀)。
Infants and young children with unrepaired tetralogy of Fallot are often blue (cyanotic).
患有法洛四联症的婴幼儿经常表面、口唇青紫(发绀)。
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