About the Authors

Georgios Karamanakos

Roles Formal analysis, Writing – original draft

gkararmanakos@windowslive.com

Affiliation First Department of Propaedeutic Medicine, Diabetes Center, National and Kapodistrian University of Athens, Laiko General Hospital, Athens, Greece

Bernardo Costa-Pinel

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Validation, Visualization, Writing – original draft

Affiliation Catalan Diabetes Prevention Research Group, Jordi Gol Primary Care Research Institute, Catalan Health Institute, Primary Health Care Division, Reus-Barcelona, Spain

Aleksandra Gilis-Januszewska

Roles Conceptualization, Data curation, Funding acquisition, Investigation, Methodology, Project administration, Resources, Writing – review & editing

Affiliation Department of Endocrinology, Jagiellonian University, Medical College, Krakow, Poland

Dzilda Velickiene

Roles Conceptualization, Data curation, Funding acquisition, Investigation, Methodology, Writing – review & editing

Affiliation Lithuanian University of Health Sciences, Institute of Endocrinology, Kaunas, Lithuania, LT

Francisco Barrio-Torrell

Roles Conceptualization, Data curation, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Visualization

Affiliation Catalan Diabetes Prevention Research Group, Jordi Gol Primary Care Research Institute, Catalan Health Institute, Primary Health Care Division, Reus-Barcelona, Spain

Xavier Cos-Claramunt

Roles Conceptualization, Investigation, Supervision, Visualization

Affiliation Catalan Diabetes Prevention Research Group, Jordi Gol Primary Care Research Institute, Catalan Health Institute, Primary Health Care Division, Reus-Barcelona, Spain

Santiago Mestre-Miravet

Roles Conceptualization, Data curation, Supervision, Visualization

Affiliation Catalan Diabetes Prevention Research Group, Jordi Gol Primary Care Research Institute, Catalan Health Institute, Primary Health Care Division, Reus-Barcelona, Spain

Beata Piwońska-Solska

Roles Investigation

Affiliation Department of Endocrinology, Jagiellonian University, Medical College, Krakow, Poland

Alicja Hubalewska-Dydejczyk

Roles Conceptualization, Funding acquisition, Project administration, Resources

Affiliation Department of Endocrinology, Jagiellonian University, Medical College, Krakow, Poland

Jaakko Tuomilehto

Roles Conceptualization, Methodology, Supervision, Writing – review & editing

Affiliations Department of Public Health Solutions, National Institute for Health and Welfare, Helsinki, Finland, Department of Public Health, University of Helsinki, Helsinki, Finland, Saudi Diabetes Research Group, King Abdulaziz University, Jeddah, Saudi Arabia

Stavros Liatis

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation First Department of Propaedeutic Medicine, Diabetes Center, National and Kapodistrian University of Athens, Laiko General Hospital, Athens, Greece

Konstantinos Makrilakis

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Visualization, Writing – original draft, Writing – review & editing

Affiliation First Department of Propaedeutic Medicine, Diabetes Center, National and Kapodistrian University of Athens, Laiko General Hospital, Athens, Greece

Competing Interests

Athens, Greek arm of the study: This project was funded by the Commission of the European Communities, Directorate C–Public Health, grant agreement no. 2004310. Under the rules of the agreement, it was also cofunded by the private sector and, in this case, it was supported by an unrestricted educational grant from Bristol–Myers–Squibb,Greece. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. This does not alter our adherence to PLOS ONE policies on sharing data and materials.