Pregnancy does not modify the risk of MS in genetically susceptible women.

Adams CJ, Wu SL, Shao X, Bradshaw PT, Gonzales E, Smith JB, Xiang AH, Bellesis KH, Chinn T, Bos SD, Wendel-Haga M, Olsson T, Kockum I, Langer-Gould AM, Schaefer C, Alfredsson L, Barcellos LF.