Special names for multiple births help identify the number of babies born at once. The development of assisted reproductive technologies, like in vitro fertilization, has led to an increase in ...

The birth defects were more likely, but still very uncommon, in infants conceived through certain fertility treatments, a large study found. By Teddy Rosenbluth After multiple cycles of I.V.F. and ...

Korea has the world's No. 1 birth rate of high-order multiple births with triplets or more. The multiple birth rate was ranked second. According to the report 'World Multifetal Birth Rate Data (HMBD)' ...