Persistent organic pollutants (POPs) can travel thousands of miles, accumulate in the food chain, and persist in the environment, taking as long as centuries to degrade. POPs are known to play a role in birth defects, cancer, immune system dysfunction, and reproductive problems in wildlife. While the effects of POPs on human health are unclear, many researchers believe that long-term exposure c...

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background: unwanted pregnancies and their complications are one of the major problems facing women in the world. this study aimed to determine the factors that affect unwanted pregnancy in the population covered by the shahroud university of medical sciences in 2013. methods: in this case-control study, 116 cases and 251 controls were randomly selected from those who referred to health care ce...