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Twinning ticks down in U.S.
Leslie Penkunas//October 7, 2019
The chance that a woman will have twins has fallen over recent years in the U.S., following more than three decades of rising twin birth rates.
Leslie Penkunas//October 7, 2019
The chance that a woman will have twins has fallen over recent years in the U.S., following more than three decades of rising twin birth rates.
