Risk for congenital malformation with H1N1 influenza vaccine: A cohort study with sibling analysis Ludvigsson, J. F. Ström, P. Lundholm, C. Cnattingius, S. Ekbom, A. Örtqvist, A. Feltelius, N. Granath, F. Stephansson, O. 2016 Enter body here... List Date: 02/02/17 |