RT Journal Article SR Electronic T1 LEAD AND MULTIPLE SCLEROSIS JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 57 OP 58 VO 27 IS 174 A1 Harry V. Warren YR 1977 UL http://bjgp.org/content/27/174/57.5.abstract AB