VDH assisted in data collection, contributed to the lab work, did statistical analyses of the data, interpreted the results and wrote the paper.
MJO conceived of the study, generated the libraries and ESTs, annotated the EST database, performed much of the analyses, interpreted the results, and drafted the manuscript.
AW designed some of the analyses, interpreted the results and drafted the manuscript.
FDW designed and conducted all of the analyses, interpreted the results, and drafted and revised the manuscript.
OR participated in the design and coordination of the study, carried out teaching of students in CPR, participated in the creation of questionnaires, obtained and analysed the data, interpreted the findings, drafted the manuscript and had full access to all the data in the study.
All analyses of variance were interpreted using a step-down process beginning with the interactions of highest order.
All analyses of variance were interpreted using a step-down approach.
The estimated risks in some of the analyses should be interpreted in the context of small sample sizes with resulting large CIs.
OG and DAR take responsibility for the accuracy of the data analyses, have interpreted the data and have written the manuscript.
MGM conceived the study, participated in the design of the study, performed some of the analyses, assisted with interpreting the results, and critically revised drafts of the manuscript.
