Low-Dose Oral Retinoid Combined with Topical Therapy Successfully Treats Punctate Palmoplantar Keratoderma Lesions Misdiagnosed as Corns: A Case Report - Joon Woo Jung; Eun Hye Hong; Eun Joo Park; Kwang Joong Kim; Kwang Ho Kim (Wolters Kluwer Medknow Publications, 2021)