Matthias Pierce, Jennifer J Kurinczuk, Patsy Spark, Peter Brocklehurst, Marian Knight
Pierce M, Kurinczuk J J, Spark P, Brocklehurst P, Knight M.
Perinatal outcomes after maternal 2009/H1N1 infection: national cohort study
BMJ 2011; 342 :d3214
doi:10.1136/bmj.d3214