NCBI https://www.ncbi.nlm.nih.gov/books/NBK9579/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9661890/ MedlinePlus https://medlineplus.gov/genetics/understanding/dtcgenetictesting/directtoconsumer/ https://medlineplus.gov/genetics/understanding/dtcgenetictesting/dtcrisksbenefits/ CDC https://www.cdc.gov/phlp/publications/topic/hipaa.html The Lancet https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(10)61939-3/fulltext