Skin Darkening in COVID-19 Patients: Case Series of Eight Patients in a Hemodialysis Unit. Pak J Kidney Dis [Internet]. 2021(e)ko urtarrilaren 31(e)an [aipatua 2026(e)ko abuztuaren 18(e)an];4(03). Available at: https://pjkd.com.pk/index.php/pjkd/article/view/48