Efficacy of intermittent topical 5-fluorouracil 5% and oral nicotinamide in the skin field cancerization: a randomized clinical trial, - Eliane Roio Ferreira; Anna Carolina Miola; Thania Rios Rossi Lima; Juliano Vilaverde Schmitt; Luciana Patricia Fernandes Abbade; Hélio Amante Miot (Sociedade Brasileira de Dermatologia, 2022)