Mother left devastated by the death of her nine-year-old son reveals her daily heartbreak at knowing the rare condition that killed him will also claim his brother
http://www.dailymail.co.uk/femail/article-3269781/Mother-left-devastated-death-nine-year-old-son-reveals-daily-heartbreak-knowing-rare-condition-killed-claim-brother.html
iT'S CALLED GENETIC COUNSELING AND IT IS BEST DONE before pregnancy!