PubMed	CENTRAL	EMBASE (Ovid)	CINAHL (EBSCO)
#1 "Antiviral Agents"[Mesh] #2 (antiviral* OR "anti NEXT viral" OR "anti virals") #3 (acyclovir OR acycloguanosine OR aciclobeta OR aciclovir OR acic OR aciclostad OR acifur OR "acipen solutab" OR acivir OR activir OR "acyclo V" OR avirax OR cicloferon OR clonmel OR clonorax OR cusiviral OR famciclovir OR genvir OR herpetad OR herpofug OR herpotern OR herpoviric OR isavir OR laciken OR mapox OR maynar OR milavir OR opthavir OR supraviran OR valacyclovir OR viclovir OR vipral OR virax$5 OR virherpes OR virmen OR virolex OR virupos OR virzin OR zoliparin OR zovirax OR zyclir) #4 ("BIOLF 62" OR "BW 759" OR cytovene OR ganciclovir OR gancyclovir OR "RS 21592" OR acyclovidar OR cicloviran OR cycloviran OR viropump OR viruseen OR zaclovir OR cameven OR cymevan OR cymeven OR cymevene OR cytovene OR denocin OR denosine OR vitrasert OR "bw 256u87" OR bw256u87 OR 256u87 OR vacv OR valaciclovir OR valacyclovir OR valtrex OR zelitrex) #5 #1 OR #2 OR #3 OR #4 #6 "Hearing Loss, Sudden"[Mesh] #7 "HEARING LOSS, SENSORINEURAL"[Mesh #8 "HEARING LOSS"[Mesh #9 "DEAFNESS"[Mesh #10 ((hearing AND los*) OR deaf*) #11 #7 OR #8 OR#9 OR #10 #12 (sudden* OR abrupt* OR rapid* OR acute*) #13 #11 AND #12 #14 SSHL OR SNHL OR ISHL OR ISSHL OR ISSNHL #15 "TINNITUS"[Mesh #16 tinnit #17 #6 OR #13 OR #14 OR #15 OR #16 #18 #5 AND #19	#1 ANTIVIRAL AGENTS explode all trees (MeSH) #2 antiviral* OR anti NEXT viral* #3 acyclovir OR acycloguanosine OR aciclobeta OR aciclovir OR acic OR aciclostad OR acifur OR acipen ADJ solutab OR acivir OR activir OR acyclo NEXT V OR avirax OR cicloferon OR clonmel OR clonorax OR cusiviral OR genvir OR herpetad OR herpofug OR herpotern OR herpoviric OR isavir OR laciken OR mapox OR maynar OR milavir OR opthavir OR supraviran OR valacyclovir OR viclovir OR vipral OR virax* OR virherpes OR virmen OR virolex OR virupos OR virzin OR zoliparin OR zovirax OR zyclir OR BIOLF NEXT 62 OR BW NEXT 759 OR cytovene OR ganciclovir OR gancyclovir OR RS NEXT 21592 OR acyclovidar OR cicloviran OR cycloviran OR viropump OR viruseen OR zaclovir OR cameven OR cymevan OR cymeven OR cymevene OR cytovene OR denocin OR denosine OR vitrasert OR bw NEXT 256u87 OR bw256u87 OR 256u87 OR vacv OR valaciclovir OR valacyclovir OR valtrex OR zelitrex #4 #1 OR #2 OR #3 #5 HEARING LOSS SUDDEN single term (MeSH) #6 HEARING LOSS SENSORINEURAL explode all trees (MeSH) #7 HEARING LOSS single term (MeSH) #8 DEAFNESS single term (MeSH) #9 hearing NEAR los* OR deaf* #10 #6 OR #7 OR #8 OR #9 #11 sudden* OR abrupt* OR rapid* OR acute* #12 #10 AND #11 #13 SSHL OR SNHL OR ISHL OR ISSHL OR ISSNHL #14 TINNITUS single term (MeSH) #15 tinnit* #16 #5 OR #12 OR #13 OR #14 OR #15 #17 #4 AND #16	1. exp ANTIVIRUS AGENT/ 2. (antiviral* or "anti viral" or "anti virals").ti,ab. 3. (acyclovir or acycloguanosine or aciclobeta or aciclovir or acic or aciclostad or acifur or "acipen solutab" or acivir or activir or "acyclo V" or avirax or cicloferon or clonmel or clonorax or cusiviral or famciclovir or genvir or herpetad or herpofug or herpotern or herpoviric or isavir or laciken or mapox or maynar or milavir or opthavir or supraviran or valacyclovir or viclovir or vipral or virax$5 or virherpes or virmen or virolex or virupos or virzin or zoliparin or zovirax or zyclir).ti,ab. 4. ("BIOLF 62" or "BW 759" or cytovene or ganciclovir or gancyclovir or "RS 21592" or acyclovidar or cicloviran or cycloviran or viropump or viruseen or zaclovir or cameven or cymevan or cymeven or cymevene or cytovene or denocin or denosine or vitrasert or "bw 256u87" or bw256u87 or 256u87 or vacv or valaciclovir or valacyclovir or valtrex or zelitrex).ti,ab. 5. 1 or 2 or 3 or 4 6. SUDDEN DEAFNESS/ 7. PERCEPTION DEAFNESS/ or HEARING LOSS/ or UNILATERAL HEARING LOSS/ or MIXED HEARING LOSS/ 8. ((hearing and los*) or deaf*).ti,ab. 9. 7 or 8 10. (sudden* or abrupt* or rapid* or acute*).ti,ab. 11. 9 and 10 12. (SSHL or SNHL or ISHL or ISSHL or ISSNHL).ti,ab. 13. TINNITUS/ 14. TINNIT*.ti,ab. 15. 6 or 11 or 12 or 13 or 14 16. 5 and 15	S1 (MH "Tinnitus") S2 TX tinnit* S3 (MH "Hearing Loss, Sensorineural") OR (MH "Deafness") S4 TX (((hearing AND los*) OR deaf*)) S5 TX ((sudden* OR abrupt* OR rapid* OR acute*)) S6 S3 or S4 S7 S5 and S6 S8 TX (SSHL OR SNHL OR ISHL OR ISSHL OR ISSNHL) S9 S1 or S2 or S7 or S8 S10 (MH "Antiviral Agents") S11 TX ((antiviral* OR "anti viral" OR "anti virals")) S12 TX ((acyclovir OR acycloguanosine OR aciclobeta OR aciclovir OR acic OR aciclostad OR acifur OR "acipen solutab" OR acivir OR activir OR "acyclo V" OR avirax OR cicloferon OR clonmel OR clonorax OR cusiviral OR famciclovir OR genvir OR herpetad OR herpofug OR herpotern OR herpoviric OR isavir OR laciken OR mapox OR maynar OR milavir OR opthavir OR supraviran OR valacyclovir OR viclovir OR vipral OR virax$5 OR virherpes OR virmen OR virolex OR virupos OR virzin OR zoliparin OR zovirax OR zyclir)) S13 TX (("BIOLF 62" OR "BW 759" OR cytovene OR ganciclovir OR gancyclovir OR "RS 21592" OR acyclovidar OR cicloviran OR cycloviran OR viropump OR viruseen OR zaclovir OR cameven OR cymevan OR cymeven OR cymevene OR cytovene OR denocin OR denosine OR vitrasert OR "bw 256u87" OR bw256u87 OR 256u87 OR vacv OR valaciclovir OR valacyclovir OR valtrex OR zelitrex)) S14 S10 or S11 or S12 or S13 S15 S9 and S14
Web of Science/BIOSIS Previews (Web of Knowledge)	Cochrane ENT Disorders Group Trials Register (ProCite database)	CAB Abstracts (Ovid)	ICTRP
#1 TS=((hearing AND los*) OR deaf*) #2 TS=(sudden* OR abrupt* OR rapid* OR acute*) #3 TS=(SSHL OR SNHL OR ISHL OR ISSHL OR ISSNHL) #4 #2 AND #1 #5 #4 OR #3 #6 TS=(antiviral* OR "anti viral*") #7 TS=(acyclovir OR acycloguanosine OR aciclobeta OR aciclovir OR acic OR aciclostad OR acifur OR "acipen solutab" OR acivir OR activir OR "acyclo V" OR avirax OR cicloferon OR clonmel OR clonorax OR cusiviral OR famciclovir OR genvir OR herpetad OR herpofug OR herpotern OR herpoviric OR isavir OR laciken OR mapox OR maynar OR milavir OR opthavir OR supraviran OR valacyclovir OR viclovir OR vipral OR virax* OR virherpes OR virmen OR virolex OR virupos OR virzin OR zoliparin OR zovirax OR zyclir) #8 TS=("BIOLF 62" OR "BW 759" OR cytovene OR ganciclovir OR gancyclovir OR "RS 21592" OR acyclovidar OR cicloviran OR cycloviran OR viropump OR viruseen OR zaclovir OR cameven OR cymevan OR cymeven OR cymevene OR cytovene OR denocin OR denosine OR vitrasert OR "bw 256u87" OR bw256u87 OR 256u87 OR vacv OR valaciclovir OR valacyclovir OR valtrex OR zelitrex) #9 #8 OR #7 OR #6 #10 #9 AND #5	((hear* OR deaf) AND (sudden* OR abrupt* OR rapid* OR acute*)) OR SSHL OR SNHL OR ISHL OR ISSHL OR ISSNHL OR tinnit*	1. (antiviral* or "anti viral" or "anti virals").ti,ab. 2. (acyclovir or acycloguanosine or aciclobeta or aciclovir or acic or aciclostad or acifur or "acipen solutab" or acivir or activir or "acyclo V" or avirax or cicloferon or clonmel or clonorax or cusiviral or famciclovir or genvir or herpetad or herpofug or herpotern or herpoviric or isavir or laciken or mapox or maynar or milavir or opthavir or supraviran or valacyclovir or viclovir or vipral or virax$5 or virherpes or virmen or virolex or virupos or virzin or zoliparin or zovirax or zyclir).ti,ab. 3. ("BIOLF 62" or "BW 759" or cytovene or ganciclovir or gancyclovir or "RS 21592" or acyclovidar or cicloviran or cycloviran or viropump or viruseen or zaclovir or cameven or cymevan or cymeven or cymevene or cytovene or denocin or denosine or vitrasert or "bw 256u87" or bw256u87 or 256u87 or vacv or valaciclovir or valacyclovir or valtrex or zelitrex).ti,ab. 4. 1 or 2 or 3 5. ((hearing and los*) or deaf*).ti,ab. 6. (sudden* or abrupt* or rapid* or acute*).ti,ab. 7. 5 AND 6 8. (SSHL or SNHL or ISHL or ISSHL or ISSNHL).ti,ab. 9. TINNITUS/ 10. TINNIT*.ti,ab. 11. 7 OR 8 OR 9 OR 10 12. 4 and 11	sudden AND deaf* OR sudden AND hear* OR SSHL OR SNHL OR ISHL OR ISSHL OR ISSNHL OR tinnit*