https://www.nature.com/articles/sc198015 Analysis of 72 cases of swimming-pool accidents resulting in serious injuries - 1980
https://www.nature.com/articles/3100430 - Analysis of factors of spinal injuries and statistics (alcohol, pool depth, lifeguard supervision) 1973 - 1997 - 11.9% in Toronto, Canada,4
https://www.nature.com/articles/sc198019 Great Britain - 1980
https://link.springer.com/article/10.2165/00007256-199723040-00003 depths - 1997
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1705463/?page=1 - 1981
https://www.nature.com/articles/3100871 - professional diving with swim clubs
https://www.nature.com/articles/sc199430 - analysis of sport spinal injuries - 1994
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1237583/ - 1977
https://www.sciencedirect.com/science/article/pii/009030199090064V - 1975 to 1986, 2435 patient
http://journals.co.za/docserver/fulltext/m_samj/59/22/13604.pdf?expires=1518323955&id=id&accname=guest&checksum=C08920C7990886D0274629C0102CC6A9 1981
https://link.springer.com/article/10.1007/s11845-011-0730-4 2011
https://www.nature.com/articles/sc200949 China - 2009
https://www.nature.com/articles/sc198018.pdf - 1956-1978
https://www.ncbi.nlm.nih.gov/pubmed/18329434 - Quebec 44 yr study
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5073752/ - Canada mentioned