Table 1.

15,232 MS patients and 24,194 ethnically matched controls included in this review.

Article	Included studies	Patients	Controls
Qiu et al. [14]	6	308	407
Rojas et al. [15]	7	464	2581
Zhang et al. [16]	32	10865	15347
Rolim Lima et al. [18]	9	1797	2945
Mohajer et al. [17]	10	1798	2914