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We would like to start by congratulating Cho and colleagues1 on undertaking a study that examines an area of cardiopulmonary resuscitation (CPR) which, potentially, could for such a simple intervention have such a dramatic impact on the quality of CPR delivered. There are surprisingly few papers published on this area, and the 2005 ILCOR guidelines2 were based largely on expert opinion with little evidence base.
The statistical relationship between a bed height at knee level and …
Competing interests None.
Provenance and peer review Not commissioned; not externally peer reviewed.