1. Prenasal thickness to nasal bone length ratio: effectiveness as a second or third trimester marker for Down syndrome. (August 2015) Authors: Tournemire, A.; Groussolles, M.; Ehlinger, V.; Lusque, A.; Morin, M.; Benevent, J.B.; Arnaud, C.; Vayssière, C. Journal: European journal of obstetrics, gynecology, and reproductive biology Issue: Volume 191(2015:Aug.) Page Start: 28 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗