Challenges encountered in the conduct of Optimal Health: A patient-centered comparative effectiveness study of interventions for adults with serious mental illness KoganJane N SchusterJames NikolajskiCara SchakePatricia CarneyTracy C MortonSally KangChaeryon ReynoldsCharles F 2018 <p>A cluster-randomized trial of two evidence-based interventions for improving health and wellness across 11 provider sites.</p>