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J.SOCSCIMED.2011.10.031
J.SOCSCIMED.2011.10.031
http://dx.doi.org/10.1016/J.SOCSCIMED.2011.10.031
Rising preterm birth rates, 1989-2004: changing demographics or changing obstetric practice?
P356
Q35675051-F83C164B-5511-4195-86A8-966D90C03408
P356
J.SOCSCIMED.2011.10.031
http://dx.doi.org/10.1016/J.SOCSCIMED.2011.10.031