Focht BC, Rejeski WJ, Hackshaw K, Ambrosius WT, Groessl E, Chaplow ZL, DeScenza VR, Bowman J, Fairman CM, Nesbit B, Dispennette K, Zhang X, Fowler M, Haynam M, Hohn S. The Collaborative Lifestyle Intervention Program in Knee Osteoarthritis Patients (CLIP-OA) trial: Design and methods. Contemp Clin Trials. 2022 Apr; 115:106730.