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Summary of trial procedures. ACP, advance care planning; ACP-E, ACP Engagement; eCPS, Control Preference Scale, electronic; EDSS, Expanded Disability Status Scale; HADS, Hospital Anxiety and Depression Scale; MSQOL-29, 29-item Multiple Sclerosis Quality of Life; OPTION, Observing Patient Involvement in Shared Decision Making; QOC, Quality of Communication; SO, significant other; ZBI, Zarit Burden Interview. Kurtzke58; Mahoney and Barthel.59
