Rationale, design and methods of VA-BRAVE: a randomized comparative effectiveness trial of two formulations of buprenorphine for treatment of opioid use disorder in veterans oleh Ismene Petrakis, Sandra A. Springer, Cynthia Davis, Elizabeth Ralevski, Lucy Gu, Robert Lew, John Hermos, Melynn Nuite, Adam J. Gordon, Thomas R. Kosten, Edward V. Nunes, Robert Rosenheck, Andrew J. Saxon, Robert Swift, Alexa Goldberg, Robert Ringer, Ryan Ferguson