CENTRAL	Cochrane Ear, Nose and Throat Disorders Group Trials Register	PubMed	EMBASE (Ovid)
#1 MeSH descriptor Tonsillectomy explode all trees #2 MeSH descriptor Palatine Tonsil explode all trees #3 tonsil* OR adenotonsil* #4 (#1 OR #2 OR #3) #5 MeSH descriptor Dissection explode all trees #6 MeSH descriptor Ligation, this term only #7 MeSH descriptor Electrosurgery explode all trees #8 MeSH descriptor Electrocoagulation explode all trees #9 MeSH descriptor Diathermy explode all trees #10 MeSH descriptor Microsurgery explode all trees #11 scissor* OR dissect* OR cold NEXT knife OR ligat* OR sutur* OR snar* #12 electrodissect* OR electr* NEAR dissect* OR electr* NEAR ablat* OR electr* NEAR coagula* OR electrocoagula* OR electrocauter* OR electr* NEAR cauter* OR electrosurg* OR electr* NEAR surg* OR bovie OR fulgurat* OR diatherm* OR electrodiatherm* OR electr* NEXT diatherm* OR thermocauter* OR thermocoagulat* OR galvanocauter* OR endotherm* OR inductotherm* OR microscop* OR bipolar OR monopolar OR microsurg* OR microbipolar OR micromonopolar OR microcoagulat* OR hot NEXT knife #13 (#5 OR #6 OR #7 OR #8 OR #9 OR #10 OR #11 OR #12) #14 (#4 AND #13)	(tonsil* OR adenotonsil*) AND (scissor* OR scalpel OR dissect* OR "cold knife" OR ligat* OR sutur* OR snar* OR electr* OR bovie OR fulgurat* OR diatherm* OR thermocauter* OR thermocoagulat* OR galvanocauter* OR endotherm* OR inductotherm* OR microscop* OR bipolar OR monopolar OR microsurg* OR microbipolar OR micromonopolar OR microcoagulat* OR "hot knife")	#7 Search #5 AND #6 #6 Search #3 OR #4 #5 Search #1 OR #2 #4 Search "electrosurgery" [tiab] OR "eletrocoagulation" [Mesh] OR "Diathermy" [Mesh] OR "Microsurgery" [Mesh] OR electrodissect* [tiab] OR (electro* [tiab] AND ablat* [tiab]) OR (electro* [tiab] AND coagulat* [tiab]) OR electrocoagula* [tiab] OR electrocauter* [tiab] OR (electro* [tiab] AND cauter* [tiab]) OR diatherm* [tiab] OR thermocauter* [tiab] OR thermocoagulat* [tiab] OR galvanocauter* [tiab] OR endotherm* [tiab] OR inductotherm* [tiab] OR bipolar [tiab] OR monopolar [tiab] OR microsurg* [tiab] OR microbipolar [tiab] OR micromonopolar [tiab] OR microcoagulat* [tiab] OR "hot knife" [tiab] OR electrosurg* [tiab] OR bovie [tiab] OR fulgurat* [tiab] #3 Search "Dissection" [Mesh] OR scissor* [tiab] OR dissect* [tiab] OR "cold knife" [tiab] OR "ligation" [Mesh] OR ligat* [tiab] OR sutur* [tiab] OR snar* [tiab] #2 Search "tonsillitis" [Mesh] OR "palatine tonsil" [Mesh] OR tonsil* OR adenotonsil* [tiab] #1 Search “Tonsillectomy” [Mesh]	1 exp tonsillectomy/ 2 exp tonsil disease/su [Surgery] 3 exp tonsil/ 4 exp tonsillitis/ 5 (tonsil* or adenotonsil* OR posttonsillectom*) 6 1 OR 2 OR 3 OR 4 OR 5 7 DISSECTION/ or SCALPEL/ or EXCISION/ 8 (scissor* or scalpel or dissect* or (cold adj knife)).ti,ab 9 LIGATION/ or SUTURE/ 10 (ligat* or sutur* or snar*).ti,ab. 11 ELECTROSURGERY/ or ELECTROCOAGULATION/ 12 DIATHERM/ or CAUTERIZATION/ 13 MICROSURGERY/ 14 (electrodissect* or (electr* adj5 dissect*) or (electr* adj5 ablat*) or (electr* adj5 coagula*) or electrocoagula* or electrocauter* or (electr* adj5 cauter*)).ti,ab. 15 (electrosurg* or (electr* adj5 surg*) or bovie or fulgurat*).ti,ab. 16 (diatherm* or electrodiatherm* or (electr* adj diatherm*) or thermocauter* or thermocoagulat* or galvanocauter* or endotherm* or inductotherm*).ti,ab. 17 (microscop* or bipolar or monopolar or microsurg* or microbipolar or micromonopolar or microcoagulat* or (hot adj knife)).ti,ab. 18 7 OR 8 OR 9 OR 10 OR 11 OR 12 OR 13 OR 14 OR 15 OR 16 OR 17 19 6 AND 18
Web of Science	BIOSIS Previews (Web of Knowledge)	CAB Abstracts	ISRCTN
#3 #1 AND #2 #2 TI=(scissor* or scalpel or dissect* or (cold adj knife) OR ligat* or sutur* or snar* OR electrodissect* or (electr* adj5 dissect*) or (electr* adj5 ablat*) or (electr* adj5 coagula*) or electrocoagula* or electrocauter* or (electr* adj5 cauter*) OR electrosurg* or (electr* adj5 surg*) or bovie or fulgurat* OR diatherm* or electrodiatherm* or (electr* adj diatherm*) or thermocauter* or thermocoagulat* or galvanocauter* or endotherm* or inductotherm* OR microscop* or bipolar or monopolar or microsurg* or microbipolar or micromonopolar or microcoagulat* or (hot adj knife)) #1 TI=(tonsil* or adenotonsil*)	#3 #1 AND #2 #2 TI=(scissor* or scalpel or dissect* or (cold adj knife) OR ligat* or sutur* or snar* OR electrodissect* or (electr* adj5 dissect*) or (electr* adj5 ablat*) or (electr* adj5 coagula*) or electrocoagula* or electrocauter* or (electr* adj5 cauter*) OR electrosurg* or (electr* adj5 surg*) or bovie or fulgurat* OR diatherm* or electrodiatherm* or (electr* adj diatherm*) or thermocauter* or thermocoagulat* or galvanocauter* or endotherm* or inductotherm* OR microscop* or bipolar or monopolar or microsurg* or microbipolar or micromonopolar or microcoagulat* or (hot adj knife)) #1 TI=(tonsil* or adenotonsil*)	1 (tonsil* or adenotonsil*).ti,ab. 2 (scissor* or scalpel or dissect* or (cold adj knife)).ti,ab. 3 (ligat* or sutur* or snar*).ti,ab. 4 (electrodissect* or (electr* adj5 dissect*) or (electr* adj5 ablat*) or (electr* adj5 coagula*) or electrocoagula* or electrocauter* or (electr* adj5 cauter*)).ti,ab. 5 (electrosurg* or (electr* adj5 surg*) or bovie or fulgurat*).ti,ab. 6 (diatherm* or electrodiatherm* or (electr* adj diatherm*) or thermocauter* or thermocoagulat* or galvanocauter* or endotherm* or inductotherm*).ti,ab. 7 (microscop* or bipolar or monopolar or microsurg* or microbipolar or micromonopolar or microcoagulat* or (hot adj knife)).ti,ab. 8 3 OR 4 OR 5 OR 6 OR 7 9 1 AND 8	tonsil% or adenotonsil% or posttonsillectom%