https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3661879/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3058324/
https://www.ncbi.nlm.nih.gov/pubmed/21512816
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3111577/ Family lost multiple individuals
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3661879/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3058324/
https://www.ncbi.nlm.nih.gov/pubmed/21512816
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3111577/ Family lost multiple individuals