Therapeutic effects of metformin for noise induced hearing loss October 30, 2019https://www.sciencedirect.com/science/article/pii/S0196070919309299?via%3Dihub Therapeutic effects of metformin for noise induced hearing loss Received 4 October 2019, Available online 30 October 2019. https://doi.org/10.1016/j.amjoto.2019.102328