https://www.healthline.com/health/most-painful-surgeries

https://www.medicalnewstoday.com/articles/321779

https://www.healthgrades.com/right-care/preparing-for-surgery/most-painful-surgeries-and-how-to-prepare-for-the-recovery

https://www.menshealth.com/health/g19526843/painful-medical-procedures/

https://heartspecialists.net.au/what-is-the-most-painful-surgery/

https://www.mayfieldclinic.com/pe-lp.htm