About the Authors
Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
Icelandic Heart Association, Kopavogur, Iceland
University of Iceland, Reykjavik, Iceland
The authors have declared that no competing interests exist.
JD and VG designed the study. EDA and JD analysed the data and drafted the manuscript. VG and GE critically revised the manuscript, collected data, and performed experiments for the study.