Methotrexate-induced cutaneous ulceration and necrosis in chronic atopic dermatitis - Malika A. Ladha, MD; Bryn Edgerton, BSc (Hons); Jonathan Levy, MD; Muhammad N. Mahmood, MD; Alim R. Devani, MD; Parbeer S. Grewal, MD; Vimal H. Prajapati, MD (Elsevier, 2020)