when do babies hear
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when do babies hear
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when do babies hear, when do babies hear in the womb, when do babies heartbeat start, when do babies heart start beating, when do babies heart rate slow down, when do babies hearing develop, heart murmur in babies, can babies hear in the womb, heart defects in babies, congenital heart defects in babies, when do babies get a heartbeat, normal heart rate for babies, when do babies have a heartbeat, when do babies start to hear in the womb
