Interim results of a clinical trial using oncolytic virotherapy in Kaposi's sarcoma-associated herpesvirus (KSHV) associated-Multicentric Castleman's Disease (MCD) by Steinberg SM, Davis DA, Tosato G, Jaffe ES, Pittaluga S, Bernstein W, Whitby D, Wyvill KM, Aleman K, O'Mahony D, Yarchoan R, Little RF