Values and preferences of patients with severe mental illness regarding smoking cessation interventions: a systematic review with best-fit framework synthesis. - Coteur K; Tops L; Bekkering GE; de Almeida Ferreira Fonseca L; van den Brand F; Cloetens H; Zeng L; Aertgeerts B; Delvaux N; Agarwal A; Agoritsas T; Vermandere M (BMJ open, 2026)