Gallbladder surgery.
The correct abbreviation for "I have" is I've.
correct abbreviation for sounds
HQ is the correct abbreviation.
The correct abbreviation for the word Sunday is "Sun."
The abbreviation for Mile is "Mi"
The correct abbreviation for liters is "L".
The correct abbreviation for court is "ct."
The correct abbreviation for October is: Oct.
The correct abbreviation for Pronunciation is "pron."
The correct abbreviation for ounces is "oz."
The correct abbreviation for continued is "cont."