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A Forest plot of multivariable disease-free survival analysis (DFS); survival curves derived from the multivariable DFS model showing the marginal effect of the histological type (B), stage (C) and treatment (D), adjusted for the effects of other covariates. Legend: SCC squamous cell carcinoma; TLM transoral laser microsurgery; OPHL open partial horizontal laryngectomy; CTRA crico-tracheal resection and anastomosis; TL total laryngectomy
