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https://www.selleckchem.com/pr....oducts/zinc05007751.
Background Reproductive health is the core science of human life and is critical to the healthy and sustainable development of human society. Since 1980, China has enforced a "one child" policy. With the implementation of the Universal Two-Child Policy in 2016, every couple is allowed to have two children instead of one, which will lead to more pregnancies, births, and advanced maternal age. Thus, women aged 20-39 years, at the peak of sexual activity and fertility, will face more reproductive health problems related to pregnancies

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