Question 1: Which has a higher risk, ABO or RH incompatibility?
Question 2: What are methods to prevent RH incompatibility?
Question 3: What is the reason for not testing the blood type of the significant other's blood type?
Question 4: How long does it take to develop antibodies to Rh+ blood?
Question 5: If your article mentions it, how many infants are affected by ABO/Rh incompatibility?
Cite resource.