For Gall bladder Surgery:
https://www.nhs.uk/conditions/gallbladder-removal/risks/
For hernia surgery:
https://www.nhs.uk/conditions/hernia/
Inguinal Hernia
https://www.nhs.uk/conditions/inguinal-hernia-repair/what-happens/
Femoral Hernia
https://www.nhs.uk/conditions/femoral-hernia-repair/
Umbilical Hernia