Progressive multifocal leukoencephalopathy in a patient with B-cell chronic lymphocytic leukemia after COVID-19 vaccination, complicated with COVID-19 and mucormycosis: a case report. - Amirifard, Hamed; Shahbazi, Mojtaba; Farahmand, Ghasem; Ranjbar, Zahra; Kaeedi, Maryam; Heydari Havadaragh, Sanaz (BMC Neurology, 2024)