Authors' contributions
AB made substantial contributions in the conception, design,
acquisition, analysis, and interpretation of data. MD participated
in the acquisition and analysis of data. EC-C participated
in the conception and design of data. All authors drafted
and revised the manuscript and have given final approval of the
version to be published.
Acknowledgements
This work was supported in part by the World Health Organization
(WHO), Regional Office for Europe, and the EuroHEAT project cofinanced
by DG Sanco (Directorate General for Health and Consumer
Affairs). WHO, Regional Office for Europe was not involved in any part
of the study described in this manuscript.