AUTHOR=Vernieri Claudio , Pusceddu Sara , de Braud Filippo 

TITLE=Impact of Metformin on Systemic Metabolism and Survival of Patients With Advanced Pancreatic Neuroendocrine Tumors

JOURNAL=Frontiers in Oncology

VOLUME=9

YEAR=2019

URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2019.00902

DOI=10.3389/fonc.2019.00902

ISSN=2234-943X