00484nas a2200181   4500000000100000008004100001100001500042700001100057700001200068700001400080700001400094700001600108700001600124700001300140700001200153245012300165022001400288       2019                            d1 aR. Persson1 aS. Lee1 aM. Yood1 aM. Wagner1 aN. Minton1 aS. Niemcryk1 aA. Lindholm1 aA. Evans1 aS. Jick00aMulti-database study of multiple sclerosis: identification, validation and description of MS patients in two countries  a0340-5354