... bothperipheral and central lines, in critically ill patients inemergency situations. As part of their HEMS trainingprogramme, intraosseous training was given using man-ual needles, Bone Injection Guns, and ... (SPSS Inc., Chicago, IL, USA) and Statistical Analy-sis System (SAS) version 0.2 software for Windows (SASInstitute, Inc., Cary, North Carolina). Exact confidenceintervals were obtained by using ... and participated in its design andcoordination, and in drafting the manuscript. BEH participated in the designof the study and the statistical analysis, and participated in drafting themanuscript....