Phase II trial of nivolumab and metformin in patients with treatmentrefractory microsatellite stable metastatic colorectal cancer2023-11-062023-11-06/wp-content/uploads/2022/02/canopy-logo-2022-white.pngCanopy Biosciences/wp-content/uploads/2022/02/canopy-logo-2022-white.png200px200px