"There are no people with physical defects in North Korea," said Ri Kwang-chol, a North Korean doctor who escaped last year. Babies with defects are killed by medical staff and quickly buried, he told the London Times.
Among the "physical defects" that will get a baby killed – even one in the womb – is being half-Chinese.
North Korean infantacide thread:
http://www.freerepublic.com/focus/f-news/1719948/posts