Also, though I have not done my own research, I have just talked to an obgyn.  He said Asians have a much larger chance of developing and EIF.  We were told that the probability of Europeans developing an EIF are ~5% and Asians are ~33%.
Once again, I did not do this research, however, if someone else wants to search for the reference to back it up, it would be an appropriate addition to this article.