About the Authors

Eliane A. Lucassen

Affiliations Clinical Center, NIH, Bethesda, Maryland, United States of America, Laboratory for Neurophysiology, Department of Molecular Cell Biology, Leiden University Medical Center, Leiden, The Netherlands

Paolo Piaggi

Affiliation Obesity Research Center, Endocrinology Unit, University Hospital of Pisa, Pisa, Italy

John Dsurney

Affiliations Clinical Center, NIH, Bethesda, Maryland, United States of America, Center for Neuroscience and Regenerative Medicine, Bethesda, Maryland, United States of America

Lilian de Jonge

Affiliation Section on Neuroendocrinology of Obesity, NIDDK, NIH, Bethesda, Maryland, United States of America

Xiong-ce Zhao

Affiliation Intramural Research Program, NIDDK, NIH, Bethesda, Maryland, United States of America

Megan S. Mattingly

Affiliation Section on Neuroendocrinology of Obesity, NIDDK, NIH, Bethesda, Maryland, United States of America

Angela Ramer

Affiliation Section on Neuroendocrinology of Obesity, NIDDK, NIH, Bethesda, Maryland, United States of America

Janet Gershengorn

Affiliation Section on Neuroendocrinology of Obesity, NIDDK, NIH, Bethesda, Maryland, United States of America

Gyorgy Csako

Affiliations Clinical Center, NIH, Bethesda, Maryland, United States of America, Department of Laboratory Medicine, Clinical Center, NIH, Bethesda, Maryland, United States of America

Giovanni Cizza

gcizza@gmail.com

Affiliation Section on Neuroendocrinology of Obesity, NIDDK, NIH, Bethesda, Maryland, United States of America

for the Sleep Extension Study Group

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JG G. Csako G. Cizza. Performed the experiments: MM AR JG G. Cizza. Analyzed the data: EAL PP JD XZ G. Csako G. Cizza. Wrote the paper: EAL PP JD LJ MM G. Csako G. Cizza.