#1	'heart atrium fibrillation'/exp OR 'heart atrium flutter'/exp OR “atrial fibrillation”:ab,ti OR (atrial:ab,ti AND fibrillation:ab,ti) OR afib:ab,ti OR “atrial flutter”:ab,ti
#2	'anticoagulant agent'/exp OR 'warfarin'/exp OR 'vitamin K group'/exp OR 'heparin'/exp OR 'enoxaparin'/exp OR 'rivaroxaban'/exp OR 'dabigatran etexilate'/exp OR 'apixaban'/exp OR 'edoxaban'/exp
#3	warfarin:ab,ti OR coumadin:ab,ti OR vitamin k:ab,ti OR enoxaparin:ab,ti OR lovenox:ab,ti OR rivaroxaban:ab,ti OR xarelto:ab,ti OR dabigatran:ab,ti OR pradaxa:ab,ti OR heparin:ab,ti OR apixaban:ab,ti OR eliquis:ab,ti OR edoxaban:ab,ti OR lixiana:ab,ti
#4	#2 OR #3
#5	'surgery'/exp OR 'dental care'/exp OR ((surgical:ab,ti OR invasive:ab,ti) AND (procedure:ab,ti OR procedures:ab,ti)) OR (dental:ab,ti AND (procedure:ab,ti OR procedures:ab,ti)) OR surgery:ab,ti OR procedures:ab,ti OR procedure:ab,ti
#6	#1 AND #4 AND #5
#7	('randomized controlled trial'/exp OR 'crossover procedure'/exp OR 'double blind procedure'/exp OR 'single blind procedure'/exp OR random*:ab,ti OR factorial*:ab,ti OR crossover*:ab,ti OR (cross NEAR/1 over*):ab,ti OR placebo*:ab,ti OR (doubl* NEAR/1 blind*):ab,ti OR (singl* NEAR/1 blind*):ab,ti OR assign*:ab,ti OR allocat*:ab,ti OR volunteer*:ab,ti OR 'clinical study'/exp OR “clinical trial”:ti,ab OR “clinical trials”:ti,ab OR 'controlled study'/exp OR 'evaluation'/exp OR “evaluation study”:ab,ti OR “evaluation studies”:ab,ti OR “intervention study”:ab,ti OR “intervention studies”:ab,ti OR “case control”:ab,ti OR 'cohort analysis'/exp OR cohort:ab,ti OR longitudinal*:ab,ti OR prospective:ab,ti OR prospectively:ab,ti OR retrospective:ab,ti OR 'follow up'/exp OR “follow up”:ab,ti OR 'comparative effectiveness'/exp OR 'comparative study'/exp OR “comparative study”:ab,ti OR “comparative studies”:ab,ti OR 'evidence based medicine'/exp OR “systematic review”:ab,ti OR “meta-analysis”:ab,ti OR “meta-analyses”:ab,ti) NOT ('editorial'/exp OR 'letter'/exp OR 'case report'/exp)
#8	#6 AND #7
#9	#8 Limits: Humans, English, 2000 - present
#10	#9 AND [embase]/lim NOT [medline]/lim