Dr. Ta Thi Chung , 82, created the Agent Orange children's ward of Tu Du Hospital in Ho Chi Minh City more than 30 years ago, and has worked there ever since. She and other doctors say that about 500 of the 60,000 children born each year at the maternity hospital, Vietnam's largest, are born with deformities some because of Agent Orange. But 90 percent of women chose to abort at the earliest sign of any abnormality, she and other doctors say. May 1, 2013.