1. Observed Rate of Down Syndrome in Twin Pregnancies. Issue 2 (June 2017) Authors: Sparks, T.N.; Norton, M.E.; Flessel, M.; Goldman, S.; Currier, R.J. Journal: Obstetric anesthesia digest Issue: Volume 37:Issue 2(2017:Jun.) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗