twin birth การใช้

• Experts say the rate of twin births has been rising since about 1981.
• Twin births are very rare-only 0.7 % of the births observed in one study.
• Twin births are seen as an evil omen in many cultures around the world.
• Calvert said horse breeders try to avoid twin births.
• And the twin birth rates in Massachusetts and Connecticut were 25 percent higher than average.
• From 1980 to 1997, the number of twin births in the United States rose 52 %.
• Borchert has never had more than twin births in his 30 years of practice, he said.
• The risk of twin birth can vary depending on what types of fertility treatments are used.
• Among non-twin births, male singletons are slightly ( about five percent ) more common than female singletons.
• The abnormally high rate of twin births in C鈔dido God骾 could be explained by the founder effect.
• Incidence of twin births is very high.
• Twin births have not been reported.
• The tendency for non-identical twin births is partly hereditary, and the necessary genes are prevalent in the archipelago.
• However, he said these figures apply to single or twin births and additional risks are associated with septuplets.
• -- Twin births continued to increase in 1998, rising by 6 percent, the largest single-year increase in several decades.
• However, he said these figures apply to single or twin births and that additional risks are associated with septuplets.
• He warned, however, that these statistics are for single or twin births, and are not necessarily accurate for septuplets.
• But the number of super-twin births has increased at a faster rate than twin births, almost tripling in those 13 years.
• But the number of super-twin births has increased at a faster rate than twin births, almost tripling in those 13 years.
• In the United States it has been estimated that by 2011 36 % of twin births resulted from conception by assisted reproductive technology.