| http://www.w3.org/ns/prov#value | - Page 11.SextupletsGeneral information about sextuplets, sets of six multiples, a type of extreme mutiple birth.Photo Gallery of Boy/Girl TwinsOnline photo gallery featuring pictures of boy/girl twins, with photos submitted by parents of twin pairs with one girl and one boy.Speech Delays in Twins - Identifying Speech...Speech delays are common in twins and other multiples.
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