SAN DIEGO (AP) — When she was born, the baby girl weighed about the same as an apple.

A San Diego hospital on Wednesday revealed the birth of the girl and said she is believed to be the world's tiniest surviving micro-preemie, who weighed just 8.6 ounces (245 grams) when she was born in December.

The girl was born 23 weeks and three days into her mother's 40-week pregnancy. Doctors told her father after the birth that he would have about an hour with his daughter before she died.

"But that hour turned into two hours, which turned into a day, which turned into a week," the mother said in a vide...