[Warning: Some may find this story's content and images to be disturbing.]

Tu Du Hospital in Ho Chi Minh City houses one of Vietnam's busiest maternity clinics, but hidden in a quiet corner, far from the wards of proud new mothers, is a room stacked floor to ceiling with every parent's nightmare. In dozens of glass jars lie the bodies of deformed babies preserved in formaldehyde — some have no heads, others have two, several are so scrambled that their faces jut from their stomachs and their arms are where their legs should be.

The doctor who delivered many of these children was Nguyen Thi Ngoc Phuong. Forty-five years ago she was a young intern at Tu Du Hospital when the city was known as Saigon, capital of war-torn South Vietnam.