@article{article5a6b9bb4, title = {The role of metformin on lung cancer survival: the first systematic review and meta-analysis of observational studies and randomized clinical trials}, author = {Brancher, Suzan and Ribeiro, Ana Elisa and Toporcov, Tatiana Natasha and Weiderpass, Elisabete}, year = {2021}, doi = {10.1007/s00432-021-03728-x}, journal = {Journal of Cancer Research and Clinical Oncology} }