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Two Swedish women have received new wombs donated by their mothers in the first mother-to-daughter uterine transplants, officials said, according to CNN.

The first woman had her uterus removed years ago because of surgery for cervical cancer, according to the University of Gothenburg in Sweden. The second woman was born without a uterus. Neither woman was identified by the university.

The operations were conducted Saturday and Sunday at the university's Sahlgrenska Hospital, said Dr. Michael Olausson, surgeon and professor.

"So far, the procedures have been a success, but the final proof of success will be the birth of a healthy child," Olausson told CNN.

In vitro procedures were performed on both women -- who are in their 30s -- before the operations, said university spokesman Krister Svahn. Their harvested eggs were fertilized and the embryos frozen.

They will receive an embryo through embryo transfer in 12 months, meaning the earliest a child could be born would be in 21 months, officials said.

The hospital said the transplants -- the result of more than a decade of Swedish and international research collaboration -- were completed without complications.

More than 10 surgeons, who trained together on the procedure for several years, took part in the surgery, said team leader Dr. Mats Brannstrom, professor of obstetrics and gynecology at the university and the hospital's chief physician.