1. Maternal serum alpha-fetoprotein in relation to zygosity. Issue 6161 (17th February 1979) Authors: Wald, N J; Cuckle, H S; Peck, S; Stirrat, G M; Turnbull, A C Journal: BMJ Issue: Volume 1:Issue 6161(1979) Page Start: 455 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗