Bridging Recovery Initiative Despite Gaps in Entry (BRIDGE): study protocol for a randomized controlled trial of a bridge clinic compared with usual care for patients with opioid u... oleh David E. Marcovitz, Katie D. White, William Sullivan, Heather M. Limper, Mary Lynn Dear, Reagan Buie, David A. Edwards, Cody Chastain, Kristopher A. Kast, Christopher J. Lindsell, Vanderbilt Learning Health System Investigators