Singh, Ridhi, Smitha S Prabhu, Balachandran C, and Kanthilatha Pai. 2020. “Acquired Palmoplantar Keratodermas: A Study of Clinical, Histopathological and Patch Test Findings”. Journal of Pakistan Association of Dermatologists 30 (3):388-95. https://www.jpad.com.pk/index.php/jpad/article/view/1441.