More and more women who give birth are overweight or obese, Green says. These women have a much higher rate of complications like diabetes and hypertension, which can lead to earlier births.. Of the roughly 4 million deliveries in the U.S. in 2002, 394,996 were considered preterm, according to the analysis.
'One-in-a-million' conjoined twins born to Atlanta parents: Delighted mom and dad welcome girls who share the same arms, legs and body-and will never be separated. 1  Asa and Eli Hamby born on Thursday morning in Northside Hospital, Atlanta.
Quick Answer. Paternal and maternal twins, commonly known as fraternal and identical twins, are distinguished by the different ways the multiple pregnancy begins. Identical twins begin as a single zygote that splits into two or more developing embryos. Fraternal twins are usually the result of multiple eggs being present for fertilization.