WARSAW, Poland (AP) — A spokeswoman for a hospital in southwestern Poland says extremely rare identical girl triplets were born earlier this month through a cesarean section and are doing well.

Justyna Marcinska of the gynecology center in Opole said Thursday that the monozygotic sisters — Amelia, Laura and Olivia — were born Sept. 15 and can be told apart only by the wristbands with their names. On doctors' orders, they were delivered in the 32nd week of the high-risk pregnancy, and weighed some 1.5 kilograms (3 pounds, 5 ounces) each.

Marcinska told The Associated Press the mother, Anna Pohler, and her daughters were doing fine and would be going home in three to four weeks when the girls were stronger and weighed over 2 kilograms (4 pounds, 6 ounces).

Monozygotic triplets are extremely rare, Marcinska said.