00434nas a2200157   4500000000100000008004100001100001200042700001100054700001700065700001300082700001300095700002200108700001800130245011400148022001400262       2019                            d1 aI. Chou1 aC. Kuo1 aR. Tanasescu1 aC. Tench1 aC. Tiley1 aC. Constantinescu1 aW. Whitehouse00aComorbidity in multiple sclerosis: its temporal relationships with disease onset and dose effect on mortality  a1351-5101