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Chronicle of maternal health career in China and Zhejiang Province
(A) Recent progress on maternal health in Zhejiang Province.
(B) Milestones of the past decade. CNEMC, China National Environmental Monitoring Center; CHN, China; ZJ, Zhejiang Province.
(C) Division of maternal trimesters and definition of preterm birth. TB, term birth; PTB, preterm birth; EPTB, extreme preterm birth.
