Just like another - BBC Health News 5th December 2007

Since the introduction of IVF in 1978, the number of multiple births has almost doubled. Does this mean that twins and other multiples have lost their "specialness"? Twins have been revered and feared throughout history. Every culture has its twin myths. Voodoo practitioners in Haiti believe twins have magical ability and share a single soul. Some Native American tribes considered them unlucky.

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