RT Journal Article SR Electronic T1 Lumbar drains can affect CSF biomarker levels JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 91 OP 92 DO 10.1136/jclinpath-2018-205296 VO 72 IS 1 A1 Craven, Claudia Louise A1 Chapman, Miles D A1 D’Antona, Linda A1 Thompson, Simon D A1 Lakdawala, Neghat A1 Zetterberg, Henrik A1 Watkins, Laurence D A1 Toma, Ahmed K YR 2019 UL http://jcp.bmj.com/content/72/1/91.abstract AB