The University of Toronto, Canada has done a research on the mattresses on which we sleep. First, this research was done in the bedrooms of 25 children. During the research, the air in the rooms of children aged 6 months to 4 years was tested. To re-check the results, 16 more new mattresses for children were bought and research was done on them. After this, very shocking revelations came to light in this research.
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