One for the Fat Boys - Twins - Twins Daily

Identical Twins are Living Epigenetic Experiments - The Atlantic

QUIZ: What Are Your Chances of Having Twins? - Mama Natural

The science of healthy baby sleep - BBC Future

How To Get Pregnant With Twins

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Four Seasons in Rome: On Twins, Insomnia, and the Biggest Funeral in the History of the World eBook : Doerr, Anthony: Books

All 12 'Cheaper by the Dozen' Kids 15 Years Later (Photos) - TheWrap

An Offseason To-Do List for the Minnesota Twins - Twins - Twins Daily

The fattest identical twins in the Guinness World Records known as the McGuire twins - were the fattest to ever walk the planet. The pair performed as tag-team wrestlers and weighed more