Clinical features and treatment outcomes of nail lichen planus: A retrospective study - Panrudee Wechsuruk, MD; Sumanas Bunyaratavej, MD; Rungsima Kiratiwongwan, MD; Pranittra Suphatsathienkul, MD; Supisara Wongdama, MD; Charussri Leeyaphan, MD (Elsevier, 2021)