Nationally reported live birth rate per cycle and mean number transferred, for women aged <35 years, as well as implantation rates, twin rate and high order multiple birth rate for reporting years ...
The period that preceded the current study, 1980 to 1998, saw an extraordinary five-fold increase in births of triplets and higher-order multiple births — from 37 per 100,000 births in 1980 to 194 ...
After the 1981 introduction of in vitro fertilization and other assisted reproductive technology, twin and multiple births skyrocketed in the United States. Dr. Zev Williams of the Columbia ...
Out of the registered multiple births, 13,565 were twins, 504 were triplets, 19 were quadruplets, and 2 were higher-order multiple births, IRNA reported. Tehran, Khuzestan, and Khorasan Razavi ...
Twin and triplet births are on the decline. Here’s how it breaks down by state. Twins, triplets, and other multiples have long caught the attention of “singletons,” or those of us born ...