First, the gestational age should be more than five weeks; You should have a list of B-ultrasound in the past week.
2./kloc-No boy was born within 0/2 months; No boy miscarried within 6 months (girls have no influence)
Three, six months without blood transfusion, organ transplantation and other major operations.
Ma Bao who wants to have a blood test and has met the requirements can be healthy in Hong Kong.