tof - SERP Analysis

https://www.hopkinsmedicine.org/health/conditions-and-diseases/tetralogy-of-fallot-tof

https://my.clevelandclinic.org/health/diseases/22343-tetralogy-of-fallot

https://www.ncbi.nlm.nih.gov/books/NBK513288/

https://kidshealth.org/en/parents/tetralogy-of-fallot.html

https://en.wikipedia.org/wiki/Tetralogy_of_Fallot

https://www.mayoclinic.org/diseases-conditions/tetralogy-of-fallot/symptoms-causes/syc-20353477

https://www.chop.edu/conditions-diseases/tetralogy-fallot

https://www.cedars-sinai.org/health-library/diseases-and-conditions---pediatrics/t/tetralogy-of-fallot-tof.html

https://www.nationwidechildrens.org/conditions/tetralogy-of-fallot

https://www.cincinnatichildrens.org/health/t/tof

https://www.nyp.org/heart/congenital-heart-disease/tetralogy-of-fallot-tof