Table 2. Key search terms.

Type of document	Search term	Alternative search terms	Associated subjective headings (MeSH terms, exploded)
Peer-reviewed articles only	Out of hours	Urgent and emergency care After hours Accident and emergency service	After-hours care Emergency medicine
Peer-reviewed articles Other documents (clinical guidelines and training materials)	Antibiotic	Antibacterial Antimicrobial	Antibacterial agents
	Prescription guidelines	Guidance on prescribing Guidance for dispensing Good practice in prescribing	Drug prescriptions Practice guidelines as topic Drug utilisation Practice patterns, physicians’ Guideline adherence
	Professional training	Professional development Professional skills Continuing professional development	Education, medical Education, nursing