延迟断脐法对新生儿脐部感染、脐带残端脱落时间及渗血情况的影响
연지단제법대신생인제부감염、제대잔단탈락시간급삼혈정황적영향
Impact of delayed umbilical method for neonatal umbilical infection, um-bilical cord stump off time and the oozing of blood