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when do babies use size 1 teats when do babies use size 1 nipple when do babies have size 1 teats how long do babies use size 1 teats can newborns use size 1 teats when should baby go up a teat size what age do babies have size 2 teats when can babies use size 1 nipples when to change baby teat size when to start using size 2 teats
