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RT @SteveStuWill: Average age at childbirth, 1970-2010 https://t.co/5UDwye3Cnl https://t.co/UcFv0RhuGK
RT @SteveStuWill: Average age at childbirth, 1970-2010 https://t.co/5UDwye3Cnl https://t.co/UcFv0RhuGK
RT @SteveStuWill: Average age at childbirth, 1970-2010 https://t.co/5UDwye3Cnl https://t.co/UcFv0RhuGK
RT @SteveStuWill: Average age at childbirth, 1970-2010 https://t.co/5UDwye3Cnl https://t.co/UcFv0RhuGK
RT @SteveStuWill: Average age at childbirth, 1970-2010 https://t.co/5UDwye3Cnl https://t.co/UcFv0RhuGK