Eleven (. %) patients had rosary shape PDA,the mean minimum diameter of PDA was (.±0.) mm (range .0 to .7 mm).
Eleven (. %) patients had rosary shape PDA,the mean minimum diameter of PDA was (.±0.) mm (range .0 to .7 mm).
串珠型例 ( % ) ,平均最窄直径 ( ± 0 )mm( 0~ 7mm) ;