Shahidi Dadras M, Asadi Kani Z, Hamedani B, Dadkhahfar S, Rastgoo N, Mozafari N. Can immunofluorescence on Tzanck smear be used as a substitute for direct immunofluorescence on skin biopsy in diagnosis of pemphigus disease? . Dermatol Pract Concept. 2022;12(3):e2022101. doi:10.5826/dpc.1203a101