Ozdemir M, Engin B, Baysal I, Mevlitoğlu I. A randomized comparison of acitretin-narrow-band TL-01 phototherapy and acitretin-psoralen plus ultraviolet A for psoriasis. Acta Derm Venereol. 2008;88(6):589–93. doi: 10.2340/00015555-0529. PMID: 19002344.