TY - RPRT TI - Increased sister-chromatid exchange in multiple sclerosis. AU - G R Sutherland AU - E Baker AU - R S Seshadri AU - A Black PY - 1980 DO - 10.1056/nejm198011063031922 UR - https://pubmed.ncbi.nlm.nih.gov/7421925/ ID - 7421925 ER -