Does anybody know why the "embryo repair" method would be used if the "egg repair" method was also an option? Is the embryo-repair method meant to weed out donor eggs that were not viable (by first ensuring that they can at least be fertilized, by fertilizing them)?
This paper from 2011 has a nice comparison of the two methods, there's pros and cons for both: [1]
According to the HFEA [2], the research group in Newcastle (who wrote the above paper) has been testing the two methods against each other - no decision yet as to the best for treatment, though.
