Cahir-McFarland, Ellen CD62L is not a reliable biomarker for predicting PML risk in natalizumab-treated R-MS patients. Author Response. [electronic resource] - Neurology 08 2016 - 958-9 p. digital Publication Type: Journal Article; Comment ISSN: 1526-632X Standard No.: 10.1212/01.wnl.0000496643.57775.41 doi