“…Most papers were identified as expert consensus (n=56, 44.8%), followed by literature review (n=35, 28.0%). Many articles described specific recommendations for performing intubation15–19 or for certain areas, such as psychiatric services,20–22 orthopaedics,23 haemodynamic,24 intrahospital transport,25 oncology,26 27 field hospitals,28 29 paediatrics,30–34 diagnostic centres,35–37 inpatient units,38–43 endoscopy and gastroenterology centres,44–48 gynaecology and obstetrics,40 49–55 emergency units,56–60 intensive care unit40 41 56 61–68 and the most common was the surgical centres 48 61 69–99. Other articles made recommendations for the hospital service as a whole 19 58 64 100–138.…”