About the Authors

María Teresa Martínez-Larrad

mserrano.hcsc@salud.madrid.org

Affiliations Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain

Arturo Corbatón Anchuelo

Affiliations Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain

Náyade Del Prado

Affiliation Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain

José María Ibarra Rueda

Affiliation Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain

Rafael Gabriel

Affiliation Clinical Epidemiology Research Unit, Hospital de La Paz, Madrid, Spain

Manuel Serrano-Ríos

Affiliations Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain

Competing Interests

The authors received funding from a commercial source (Eli Lilly Lab and Bayer Pharmaceutical Co.), but this does not alter their adherence to PLOS ONE policies on sharing data and materials. The authors have declared that no competing interests exist.

Author Contributions

Wrote the paper: MTML MSR. Study concept and design: MSR. Acquisition of data: ACA JMIR RG. Analysis and interpretation of data: NDP MTML MSR.