https://www.businessinsider.com/screen-time-could-delay-child-development-study-2019-1
https://hms.harvard.edu/news/screen-time-brain
https://www.psychologytoday.com/ca/blog/mental-wealth/2
https://jamanetwork.com/journals/jamapediatrics/fullarticle/2748634
https://www.ncbi.nlm.nih.gov/pubmed/24277828
https://healthimpactnews.com/2013/fda-pertussis-vaccine-study
https://www.ncbi.nlm.nih.gov/pubmed/31424532
https://www.ptcommunity.com/wire/new-study-fluoridation-lowers-iq-formula-fed-babies
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