Database	Searched	Search strategy
The Cochrane Hepato‐Biliary Group Controlled Trials Register	July 2014	(((ethanol or alcohol or acetic acid or vinegar) and (inject* or ablati*)) or PEI or PAI or PAAI) AND (((liver or hepatic or hepatocellular or hepato‐cellular) and (carcinom* or cancer* or neoplasm* or malign* or tumo*)) or HCC)
Cochrane Central Register of Controlled Trials (CENTRAL)	Issue 6 of 12, 2014	#1 MeSH descriptor: [Ethanol] explode all trees and with qualifier(s): [Administration & dosage ‐ AD, Therapeutic use ‐ TU] #2 MeSH descriptor: [Acetic Acid] explode all trees #3 MeSH descriptor: [Injections] explode all trees #4 (((ethanol or alcohol or acetic acid or vinegar) and (inject* or ablati*)) or PEI or PAI or PAAI) #5 #1 or #2 or #3 or #4 #6 MeSH descriptor: [Liver Neoplasms] explode all trees #7 (((liver or hepatic or hepatocellular or hepato‐cellular) and (carcinom* or cancer* or neoplasm* or malign* or tumo*)) or HCC) #8 #6 or #7 #9 #5 and #8
MEDLINE (Ovid SP)	1946 to July 2014	#1 exp Ethanol/ad, tu [Administration & Dosage, Therapeutic Use] #2 exp Acetic Acid/ad, tu [Administration & Dosage, Therapeutic Use] #3 exp Injections/ #4 (((ethanol or alcohol or acetic acid or vinegar) and (inject* or ablati*)) or PEI or PAI or PAAI).mp. [mp=title, abstract, original title, name of substance word, subject heading word, keyword heading word, protocol supplementary concept word, rare disease supplementary concept word, unique identifier] #5 #1 or #2 or #3 or #4 #6 exp Liver Neoplasms/ #7 (((liver or hepatic or hepatocellular or hepato‐cellular) and (carcinom* or cancer* or neoplasm* or malign* or tumo*)) or HCC).mp. [mp=title, abstract, original title, name of substance word, subject heading word, keyword heading word, protocol supplementary concept word, rare disease supplementary concept word, unique identifier] #8 #6 or #7 #9 #5 and #8 #10 (random* or blind* or placebo* or meta‐analys*).mp. [mp=title, abstract, original title, name of substance word, subject heading word, keyword heading word, protocol supplementary concept word, rare disease supplementary concept word, unique identifier] #11 #9 and #10
EMBASE (Ovid SP)	1974 to July 2014	#1 exp alcohol/ad, do, th [Drug Administration, Drug Dose, Therapy] #2 exp acetic acid/ad, do, dt [Drug Administration, Drug Dose, Drug Therapy] #3 exp injection/ #4 (((ethanol or alcohol or acetic acid or vinegar) and (inject* or ablati*)) or PEI or PAI or PAAI).mp. [mp=title, abstract, subject headings, heading word, drug trade name, original title, device manufacturer, drug manufacturer, device trade name, keyword] #5 #1 or #2 or #3 or #4 #6 exp liver tumor/ #7 (((liver or hepatic or hepatocellular or hepato‐cellular) and (carcinom* or cancer* or neoplasm* or malign* or tumo*)) or HCC).mp. [mp=title, abstract, subject headings, heading word, drug trade name, original title, device manufacturer, drug manufacturer, device trade name, keyword] #8 #6 or #7 #9 #5 and #8 #10 (random* or blind* or placebo* or meta‐analys*).mp. [mp=title, abstract, subject headings, heading word, drug trade name, original title, device manufacturer, drug manufacturer, device trade name, keyword] #11 #9 and #10
Science Citation Index Expanded	1900 to July 2014	#1 TS=(((ethanol or alcohol or acetic acid or vinegar) and (inject* or ablati*)) or PEI or PAI or PAAI) #2 TS=(((liver or hepatic or hepatocellular or hepato‐cellular) and (carcinom* or cancer* or neoplasm* or malign* or tumo*)) or HCC) #3 #2 AND #1 #4 TS=(random* or blind* or placebo* or meta‐analys*) #5 #4 AND #3