媽媽資訊網
How midwife can support physiological birth?
Why intrusive and invasive act affect the flow of birth hormones?
http://www.spiritualbirth.net/what-is-the-fetus-ejection-reflex?fbclid=IwAR2eksM5CrPyUR6kntfGqpugDMGba-PM8yHGzbitjSqdwlh0vvpsiBd4S3g