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As @LangLangC found, there is a more recent study also reported by Nationwide Children’s Hospital: Study results showed from January 2000 through June 2017 there were 2,968 ingestions of marijuana by children younger than six years old reported to U.S. poison centers. The majority (72.4%) of exposures were in children younger than three years old. More ...


The introduction of the international standard ISO 11540:2014 “Writing and marking instruments — Specification for caps to reduce the risk of asphyxiation” already makes clear that the intention of the design is to reduce the risk of asphyxiation for children. If a child inhales a pen cap it might become lodged below the larynx and block the trachea. The ...


The BIC FAQ says the hole in the cap is to prevent children from choking to death. It was quoted in the question: The reason that some BIC® pens have a hole in their cap is to prevent the cap from completely obstructing the airway if accidently inhaled. This is requested by the international safety standards ISO11540, except for in cases where the cap is ...

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