A woman has given birth to a baby girl five weeks after delivering her twin, also a girl, doctors in Phoenix said Friday.

"I would put the odds of this happening . . . at somewhere around one in tens of millions," said Dr. John Elliott, head of the medical team at Good Samaritan Hospital that delivered the baby.Hospital officials said the mother, Kathy Fisk, 35, and the baby, Lindsay Kathryn Fisk, were both doing well, although Lindsay was born three months premature.

She was born Nov. 26, by Caesarian section. Her twin, Jessica, was born Oct. 23, after only 22 weeks of pregnancy. She weighed just 15 ounces and died shortly after birth, doctors said.