1. Working Group on the Screening for Neural Tube Defects. Report,1979
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3. An optimised radioimmunoassay for maternal serum afoetoprotein using polyethylene glycol;Khadempour, M.H.; Laing, I.; Gowenlock, A.H.;Ann Clin. Biochem; American College of Obstetrics and Gynecologists and American Academy of Pediatrics. AFP task force report,1978
4. Diagnostic reagents for alphafetoprotein;Watson, D.; Pow, M.;Lancet,1976
5. Relation between maternal weight and serum alphafetoprotein concentration during the second trimester;Haddow, J.E.; Kloza, E.M.; Knight, G.J.; Smith, D.E.;Clin Chem,1981