- Radiology teaching file on hemolytic disease of the newborn.chorus.rad.mcw.edu/doc/00889.html
- Problems during childbirth occurs when the mother is RH negative and the father is RH positive. This problem often happens during the prenatal period, or a few months before the child is born.agham.asti.dost.gov.ph/1998/4th/extras/chris1.htm