An Online Acceptance and Mindfulness Intervention for Chronic Pain in Veterans: Development and Protocol for a Pilot Feasibility Randomized Controlled Trial - Erin D Reilly; Ummul-Kiram Kathawalla; Hannah E Robins; Alicia A Heapy; Timothy P Hogan; Molly E Waring; Karen S Quigley; Charles E Drebing; Timothy Bickmore; Matias Volonte; Megan M Kelly (JMIR Research Protocols, 2023)