S1	(MH "Emergency Service+")
S2	TI ((emergen* or trauma or triage or urgent or nonurgent or semiurgent or semi‐urgent or nonemergen*) n2 (care or healthcare or department* or unit or units or treatment* or visit or visits)) or AB ((emergency or trauma or triage) n2 (care or healthcare or department* or unit or units or treatment* or visit or visits or patient*))
S3	TI ("accident and emergency" or "accident & emergency" or emergency service*) or AB ("accident and emergency" or "accident & emergency" or emergency service*)
S4	MH Triage
S5	S1 OR S2 OR S3 OR S4
S6	MH "Physicians, Family"
S7	(MH "Nurse Practitioners") OR (MH "Clinical Nurse Specialists") OR (MH "Family Nurse Practitioners") OR (MH "Pediatric Nurse Practitioners") OR (MH "Acute Care Nurse Practitioners") OR (MH "Adult Nurse Practitioners") OR (MH "Gerontologic Nurse Practitioners") OR (MH "OB‐GYN Nurse Practitioners")
S8	(MH "Clinical Nurse Specialists")
S9	(MH "Allied Health Personnel") OR (MH "Emergency Medical Technicians") OR (MH "Medical Assistants") OR (MH "Ophthalmic Technologists") OR (MH "Orthopedic Technologists") OR (MH "Pharmacy Technicians") OR (MH "Community Health Workers") OR (MH "Mental Health Personnel+") OR (MH "Pharmacists") OR (MH "Rural Health Personnel") OR (MH "Nursing Assistants") OR (MH "Psychiatric Technicians")
S10	TI (nurse practitioner* or nurse specialist*) or AB (nurse practitioner* or nurse specialist*)
S11	TI ("out of hours" or afterhours care or after hours care) or AB ("out of hours" or afterhours care or after hours care)
S12	S6 OR S7 OR S8 OR S9 OR S10 OR S11
S13	S5 AND S12
S14	(MH "Emergency Nurse Practitioners")
S15	TI ((community or primary health or primary care) n2 (nurse or nurses or nursing staff or nursing personnel*)) or AB ((community or primary health or primary care) n2 (nurse or nurses or nursing staff or nursing personnel*)) and ((MH "Emergency Service") OR (MH "Trauma Centers"))
S16	(TI community or MW community) and ((MH "Emergency Service") OR (MH "Trauma Centers"))
S17	S13 OR S14 OR S15 Or S16
S18	PT randomized controlled trial
S19	PT clinical trial
S20	PT research
S21	(MH "Randomized Controlled Trials")
S22	(MH "Clinical Trials")
S23	(MH "Intervention Trials")
S24	(MH "Nonrandomized Trials")
S25	(MH "Experimental Studies")
S26	(MH "Pretest‐Posttest Design+")
S27	(MH "Quasi‐Experimental Studies+")
S28	(MH "Multicenter Studies")
S29	(MH "Health Services Research")
S30	TI ( randomis* or randomiz* or randomly) OR AB ( randomis* or randomiz* or randomly)
S31	TI (trial or effect* or impact* or intervention* or before N5 after or pre N5 post or ((pretest or "pre test") and (posttest or "post test")) or quasiexperiment* or quasi W0 experiment* or pseudo experiment* or pseudoexperiment* or evaluat* or "time series" or time W0 point* or repeated W0 measur*) OR AB (trial or effect* or impact* or intervention* or before N5 after or pre N5 post or ((pretest or "pre test") and (posttest or "post test")) or quasiexperiment* or quasi W0 experiment* or pseudo experiment* or pseudoexperiment* or evaluat* or "time series" or time W0 point* or repeated W0 measur*)
S32	S18 OR S19 OR S20 OR S21 OR S22 OR S23 OR S24 OR S25 OR S26 OR S27 OR S28 OR S29 OR S30 OR S31
S33	S17 AND S32