"When the entire village know a woman' husband has been in prison for 10 or 15 years we don't want her to be suddenly walking down the street pregnant, " says Dr Abu Khaizaran.

BBC: Palestinians born 'from prisoners' smuggled sperm'

In a paper published earlier this year in the British Medical Journal, Dr. Lo and his co-researchers showed they could find all 86 cases of Down syndrome in testing done on 752 pregnant women.

WSJ: New Prenatal Tests Offer Safer, Early Screenings

Issues related to preventing pregnant women from getting a drug have tended to slow down drug approvals a lot.

FORBES: Vivus Diet Drug Denied

Screening services for cystic fibrosis and Down's syndrome are to be made available to all new mothers and pregnant women.

BBC: Cystic fibrosis screening for all