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严重型口腔扁平苔癣是一种慢性、疼痛而又难治性疾病,作者选择28名重型的口腔扁平苔癣,用etretinata作双盲,交叉治疗试验。
Severe oral lichen planus is a chronic, painful and refractory disease. The authors selected 28 heavy oral lichen planus patients for double-blind, crossover treatment trials with etretinata.