"Our findings provide a quantitative estimate of the risk of microcephaly in fetuses and neonates whose mothers are infected with Zika virus." Published Online: 15 March 2016, http://dx.doi.org/10.1016/S0140-6736(16)00651-6 Please download this article directly from the webpage: http://www.thelancet.com/pdfs/journals/lancet/PIIS0140-6736%2816%2900651-6.pdf