The association between Zika virus infection and microcephaly in Brazil 2015–2017: An observational analysis of over 4 million births nork Brady, OJ, Osgood-Zimmerman, A, Kassebaum, NJ, Ray, SE, De Araújo, VEM, Da Nóbrega, AA, Frutuoso, LCV, Lecca, RCR, Stevens, A, De Oliveira, B, De Lima, JM, Bogoch, II, Mayaud, P, Jaenisch, T, Mokdad, AH, Murray, CJL, Hay, S, Reiner, RC, Marinho, F