The odds of having identical quadruplets are one in 11 million births. With Rachel Vargas's complications, her babies are one in 40 million.

Around one in 11 million. Those are the odds medical experts gave Rachel and Marco Vargas for their rare pregnancy.

In one case, a 61-year-old woman called Susan had 10 hours more of sun exposure than her identical twin Jeanne per week (seen below ... was found to add 2.5 years to the smoker's estimated ...

PHOENIX — When Rachel Vargas went in for a routine ultrasound at the start of her ... t know what to say,” she recalled. Spontaneous identical quadruplet pregnancies are incredibly rare ...

When you're expecting a bundle of joy, one thing you don't expect is four of them. Carrying quadruplets is rare and risky, ...

While most identical twins share ... closely with ultrasound and fetal Doppler’s. Observation is an option if you have stage 1 TTTS or are in advanced gestational age (28 weeks and beyond).

A set of identical ... 32-week mark of Ms Walsh’s pregnancy. Multiple births run in the family, with Ms Walsh’s grandmother being a triplet and Mr Alves’s uncle and aunt being twins.

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